ART: Refactor hidden_api

Add hidden_api.cc, move handling of hidden fields there. Also
remove an unnecessary include that meant hidden_api was imported
into too many compilation units, and fix transitive includes.

Bug: 73896556
Test: mmma art
Test: m test-art-host
Change-Id: Ie47e11abcea68e326c410bab215ebbfbf049051b
diff --git a/runtime/Android.bp b/runtime/Android.bp
index 4736fd3..c0f1c36 100644
--- a/runtime/Android.bp
+++ b/runtime/Android.bp
@@ -87,6 +87,7 @@
         "gc/space/zygote_space.cc",
         "gc/task_processor.cc",
         "gc/verification.cc",
+        "hidden_api.cc",
         "hprof/hprof.cc",
         "image.cc",
         "index_bss_mapping.cc",
diff --git a/runtime/class_linker.cc b/runtime/class_linker.cc
index 2110d04..412834c 100644
--- a/runtime/class_linker.cc
+++ b/runtime/class_linker.cc
@@ -72,6 +72,7 @@
 #include "gc/space/space-inl.h"
 #include "gc_root-inl.h"
 #include "handle_scope-inl.h"
+#include "hidden_api.h"
 #include "image-inl.h"
 #include "imt_conflict_table.h"
 #include "imtable-inl.h"
diff --git a/runtime/hidden_api.cc b/runtime/hidden_api.cc
new file mode 100644
index 0000000..f0b36a0
--- /dev/null
+++ b/runtime/hidden_api.cc
@@ -0,0 +1,172 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "hidden_api.h"
+
+#include "base/dumpable.h"
+
+namespace art {
+namespace hiddenapi {
+
+static inline std::ostream& operator<<(std::ostream& os, AccessMethod value) {
+  switch (value) {
+    case kReflection:
+      os << "reflection";
+      break;
+    case kJNI:
+      os << "JNI";
+      break;
+    case kLinking:
+      os << "linking";
+      break;
+  }
+  return os;
+}
+
+static constexpr bool EnumsEqual(EnforcementPolicy policy, HiddenApiAccessFlags::ApiList apiList) {
+  return static_cast<int>(policy) == static_cast<int>(apiList);
+}
+
+// GetMemberAction-related static_asserts.
+static_assert(
+    EnumsEqual(EnforcementPolicy::kAllLists, HiddenApiAccessFlags::kLightGreylist) &&
+    EnumsEqual(EnforcementPolicy::kDarkGreyAndBlackList, HiddenApiAccessFlags::kDarkGreylist) &&
+    EnumsEqual(EnforcementPolicy::kBlacklistOnly, HiddenApiAccessFlags::kBlacklist),
+    "Mismatch between EnforcementPolicy and ApiList enums");
+static_assert(
+    EnforcementPolicy::kAllLists < EnforcementPolicy::kDarkGreyAndBlackList &&
+    EnforcementPolicy::kDarkGreyAndBlackList < EnforcementPolicy::kBlacklistOnly,
+    "EnforcementPolicy values ordering not correct");
+
+namespace detail {
+
+MemberSignature::MemberSignature(ArtField* field) {
+  member_type_ = "field";
+  signature_parts_ = {
+    field->GetDeclaringClass()->GetDescriptor(&tmp_),
+    "->",
+    field->GetName(),
+    ":",
+    field->GetTypeDescriptor()
+  };
+}
+
+MemberSignature::MemberSignature(ArtMethod* method) {
+  member_type_ = "method";
+  signature_parts_ = {
+    method->GetDeclaringClass()->GetDescriptor(&tmp_),
+    "->",
+    method->GetName(),
+    method->GetSignature().ToString()
+  };
+}
+
+bool MemberSignature::DoesPrefixMatch(const std::string& prefix) const {
+  size_t pos = 0;
+  for (const std::string& part : signature_parts_) {
+    size_t count = std::min(prefix.length() - pos, part.length());
+    if (prefix.compare(pos, count, part, 0, count) == 0) {
+      pos += count;
+    } else {
+      return false;
+    }
+  }
+  // We have a complete match if all parts match (we exit the loop without
+  // returning) AND we've matched the whole prefix.
+  return pos == prefix.length();
+}
+
+bool MemberSignature::IsExempted(const std::vector<std::string>& exemptions) {
+  for (const std::string& exemption : exemptions) {
+    if (DoesPrefixMatch(exemption)) {
+      return true;
+    }
+  }
+  return false;
+}
+
+void MemberSignature::Dump(std::ostream& os) const {
+  for (std::string part : signature_parts_) {
+    os << part;
+  }
+}
+
+void MemberSignature::WarnAboutAccess(AccessMethod access_method,
+                                      HiddenApiAccessFlags::ApiList list) {
+  LOG(WARNING) << "Accessing hidden " << member_type_ << " " << Dumpable<MemberSignature>(*this)
+               << " (" << list << ", " << access_method << ")";
+}
+
+template<typename T>
+bool ShouldBlockAccessToMemberImpl(T* member, Action action, AccessMethod access_method) {
+  // Get the signature, we need it later.
+  MemberSignature member_signature(member);
+
+  Runtime* runtime = Runtime::Current();
+
+  if (action == kDeny) {
+    // If we were about to deny, check for an exemption first.
+    // Exempted APIs are treated as light grey list.
+    if (member_signature.IsExempted(runtime->GetHiddenApiExemptions())) {
+      action = kAllowButWarn;
+      // Avoid re-examining the exemption list next time.
+      // Note this results in the warning below showing "light greylist", which
+      // seems like what one would expect. Exemptions effectively add new members to
+      // the light greylist.
+      member->SetAccessFlags(HiddenApiAccessFlags::EncodeForRuntime(
+              member->GetAccessFlags(), HiddenApiAccessFlags::kLightGreylist));
+    }
+  }
+
+  // Print a log message with information about this class member access.
+  // We do this regardless of whether we block the access or not.
+  member_signature.WarnAboutAccess(access_method,
+      HiddenApiAccessFlags::DecodeFromRuntime(member->GetAccessFlags()));
+
+  if (action == kDeny) {
+    // Block access
+    return true;
+  }
+
+  // Allow access to this member but print a warning.
+  DCHECK(action == kAllowButWarn || action == kAllowButWarnAndToast);
+
+  // Depending on a runtime flag, we might move the member into whitelist and
+  // skip the warning the next time the member is accessed.
+  if (runtime->ShouldDedupeHiddenApiWarnings()) {
+    member->SetAccessFlags(HiddenApiAccessFlags::EncodeForRuntime(
+        member->GetAccessFlags(), HiddenApiAccessFlags::kWhitelist));
+  }
+
+  // If this action requires a UI warning, set the appropriate flag.
+  if (action == kAllowButWarnAndToast || runtime->ShouldAlwaysSetHiddenApiWarningFlag()) {
+    runtime->SetPendingHiddenApiWarning(true);
+  }
+
+  return false;
+}
+
+// Need to instantiate this.
+template bool ShouldBlockAccessToMemberImpl<ArtField>(ArtField* member,
+                                                      Action action,
+                                                      AccessMethod access_method);
+template bool ShouldBlockAccessToMemberImpl<ArtMethod>(ArtMethod* member,
+                                                       Action action,
+                                                       AccessMethod access_method);
+
+}  // namespace detail
+}  // namespace hiddenapi
+}  // namespace art
diff --git a/runtime/hidden_api.h b/runtime/hidden_api.h
index 0e6f159..cc6c146 100644
--- a/runtime/hidden_api.h
+++ b/runtime/hidden_api.h
@@ -19,7 +19,7 @@
 
 #include "art_field-inl.h"
 #include "art_method-inl.h"
-#include "base/dumpable.h"
+#include "base/mutex.h"
 #include "dex/hidden_api_access_flags.h"
 #include "mirror/class-inl.h"
 #include "reflection.h"
@@ -58,25 +58,6 @@
   kLinking,
 };
 
-inline std::ostream& operator<<(std::ostream& os, AccessMethod value) {
-  switch (value) {
-    case kReflection:
-      os << "reflection";
-      break;
-    case kJNI:
-      os << "JNI";
-      break;
-    case kLinking:
-      os << "linking";
-      break;
-  }
-  return os;
-}
-
-static constexpr bool EnumsEqual(EnforcementPolicy policy, HiddenApiAccessFlags::ApiList apiList) {
-  return static_cast<int>(policy) == static_cast<int>(apiList);
-}
-
 inline Action GetMemberAction(uint32_t access_flags) {
   EnforcementPolicy policy = Runtime::Current()->GetHiddenApiEnforcementPolicy();
   if (policy == EnforcementPolicy::kNoChecks) {
@@ -89,16 +70,7 @@
     return kAllow;
   }
   // The logic below relies on equality of values in the enums EnforcementPolicy and
-  // HiddenApiAccessFlags::ApiList, and their ordering. Assert that this is as expected.
-  static_assert(
-      EnumsEqual(EnforcementPolicy::kAllLists, HiddenApiAccessFlags::kLightGreylist) &&
-      EnumsEqual(EnforcementPolicy::kDarkGreyAndBlackList, HiddenApiAccessFlags::kDarkGreylist) &&
-      EnumsEqual(EnforcementPolicy::kBlacklistOnly, HiddenApiAccessFlags::kBlacklist),
-      "Mismatch between EnforcementPolicy and ApiList enums");
-  static_assert(
-      EnforcementPolicy::kAllLists < EnforcementPolicy::kDarkGreyAndBlackList &&
-      EnforcementPolicy::kDarkGreyAndBlackList < EnforcementPolicy::kBlacklistOnly,
-      "EnforcementPolicy values ordering not correct");
+  // HiddenApiAccessFlags::ApiList, and their ordering. Assertions are in hidden_api.cc.
   if (static_cast<int>(policy) > static_cast<int>(api_list)) {
     return api_list == HiddenApiAccessFlags::kDarkGreylist
         ? kAllowButWarnAndToast
@@ -108,6 +80,8 @@
   }
 }
 
+// Implementation details. DO NOT ACCESS DIRECTLY.
+namespace detail {
 
 // Class to encapsulate the signature of a member (ArtField or ArtMethod). This
 // is used as a helper when matching prefixes, and when logging the signature.
@@ -118,69 +92,45 @@
   std::string tmp_;
 
  public:
-  explicit MemberSignature(ArtField* field) REQUIRES_SHARED(Locks::mutator_lock_) {
-    member_type_ = "field";
-    signature_parts_ = {
-      field->GetDeclaringClass()->GetDescriptor(&tmp_),
-      "->",
-      field->GetName(),
-      ":",
-      field->GetTypeDescriptor()
-    };
-  }
+  explicit MemberSignature(ArtField* field) REQUIRES_SHARED(Locks::mutator_lock_);
+  explicit MemberSignature(ArtMethod* method) REQUIRES_SHARED(Locks::mutator_lock_);
 
-  explicit MemberSignature(ArtMethod* method) REQUIRES_SHARED(Locks::mutator_lock_) {
-    member_type_ = "method";
-    signature_parts_ = {
-      method->GetDeclaringClass()->GetDescriptor(&tmp_),
-      "->",
-      method->GetName(),
-      method->GetSignature().ToString()
-    };
-  }
+  void Dump(std::ostream& os) const;
 
-  const std::vector<std::string>& Parts() const {
-    return signature_parts_;
-  }
-
-  void Dump(std::ostream& os) const {
-    for (std::string part : signature_parts_) {
-      os << part;
-    }
-  }
   // Performs prefix match on this member. Since the full member signature is
   // composed of several parts, we match each part in turn (rather than
   // building the entire thing in memory and performing a simple prefix match)
-  bool DoesPrefixMatch(const std::string& prefix) const {
-    size_t pos = 0;
-    for (const std::string& part : signature_parts_) {
-      size_t count = std::min(prefix.length() - pos, part.length());
-      if (prefix.compare(pos, count, part, 0, count) == 0) {
-        pos += count;
-      } else {
-        return false;
-      }
-    }
-    // We have a complete match if all parts match (we exit the loop without
-    // returning) AND we've matched the whole prefix.
-    return pos == prefix.length();
-  }
+  bool DoesPrefixMatch(const std::string& prefix) const;
 
-  bool IsExempted(const std::vector<std::string>& exemptions) {
-    for (const std::string& exemption : exemptions) {
-      if (DoesPrefixMatch(exemption)) {
-        return true;
-      }
-    }
-    return false;
-  }
+  bool IsExempted(const std::vector<std::string>& exemptions);
 
-  void WarnAboutAccess(AccessMethod access_method, HiddenApiAccessFlags::ApiList list) {
-    LOG(WARNING) << "Accessing hidden " << member_type_ << " " << Dumpable<MemberSignature>(*this)
-                 << " (" << list << ", " << access_method << ")";
-  }
+  void WarnAboutAccess(AccessMethod access_method, HiddenApiAccessFlags::ApiList list);
 };
 
+template<typename T>
+bool ShouldBlockAccessToMemberImpl(T* member,
+                                   Action action,
+                                   AccessMethod access_method)
+    REQUIRES_SHARED(Locks::mutator_lock_);
+
+// Returns true if the caller is either loaded by the boot strap class loader or comes from
+// a dex file located in ${ANDROID_ROOT}/framework/.
+ALWAYS_INLINE
+inline bool IsCallerInPlatformDex(ObjPtr<mirror::ClassLoader> caller_class_loader,
+                                  ObjPtr<mirror::DexCache> caller_dex_cache)
+    REQUIRES_SHARED(Locks::mutator_lock_) {
+  if (caller_class_loader.IsNull()) {
+    return true;
+  } else if (caller_dex_cache.IsNull()) {
+    return false;
+  } else {
+    const DexFile* caller_dex_file = caller_dex_cache->GetDexFile();
+    return caller_dex_file != nullptr && caller_dex_file->IsPlatformDexFile();
+  }
+}
+
+}  // namespace detail
+
 // Returns true if access to `member` should be denied to the caller of the
 // reflective query. The decision is based on whether the caller is in the
 // platform or not. Because different users of this function determine this
@@ -209,72 +159,13 @@
   }
 
   // Member is hidden and caller is not in the platform.
-
-  // Get the signature, we need it later.
-  MemberSignature member_signature(member);
-
-  Runtime* runtime = Runtime::Current();
-
-  if (action == kDeny) {
-    // If we were about to deny, check for an exemption first.
-    // Exempted APIs are treated as light grey list.
-    if (member_signature.IsExempted(runtime->GetHiddenApiExemptions())) {
-      action = kAllowButWarn;
-      // Avoid re-examining the exemption list next time.
-      // Note this results in the warning below showing "light greylist", which
-      // seems like what one would expect. Exemptions effectively add new members to
-      // the light greylist.
-      member->SetAccessFlags(HiddenApiAccessFlags::EncodeForRuntime(
-              member->GetAccessFlags(), HiddenApiAccessFlags::kLightGreylist));
-    }
-  }
-
-  // Print a log message with information about this class member access.
-  // We do this regardless of whether we block the access or not.
-  member_signature.WarnAboutAccess(access_method,
-      HiddenApiAccessFlags::DecodeFromRuntime(member->GetAccessFlags()));
-
-  if (action == kDeny) {
-    // Block access
-    return true;
-  }
-
-  // Allow access to this member but print a warning.
-  DCHECK(action == kAllowButWarn || action == kAllowButWarnAndToast);
-
-  // Depending on a runtime flag, we might move the member into whitelist and
-  // skip the warning the next time the member is accessed.
-  if (runtime->ShouldDedupeHiddenApiWarnings()) {
-    member->SetAccessFlags(HiddenApiAccessFlags::EncodeForRuntime(
-        member->GetAccessFlags(), HiddenApiAccessFlags::kWhitelist));
-  }
-
-  // If this action requires a UI warning, set the appropriate flag.
-  if (action == kAllowButWarnAndToast || runtime->ShouldAlwaysSetHiddenApiWarningFlag()) {
-    runtime->SetPendingHiddenApiWarning(true);
-  }
-
-  return false;
-}
-
-// Returns true if the caller is either loaded by the boot strap class loader or comes from
-// a dex file located in ${ANDROID_ROOT}/framework/.
-inline bool IsCallerInPlatformDex(ObjPtr<mirror::ClassLoader> caller_class_loader,
-                                  ObjPtr<mirror::DexCache> caller_dex_cache)
-    REQUIRES_SHARED(Locks::mutator_lock_) {
-  if (caller_class_loader.IsNull()) {
-    return true;
-  } else if (caller_dex_cache.IsNull()) {
-    return false;
-  } else {
-    const DexFile* caller_dex_file = caller_dex_cache->GetDexFile();
-    return caller_dex_file != nullptr && caller_dex_file->IsPlatformDexFile();
-  }
+  return detail::ShouldBlockAccessToMemberImpl(member, action, access_method);
 }
 
 inline bool IsCallerInPlatformDex(ObjPtr<mirror::Class> caller)
     REQUIRES_SHARED(Locks::mutator_lock_) {
-  return !caller.IsNull() && IsCallerInPlatformDex(caller->GetClassLoader(), caller->GetDexCache());
+  return !caller.IsNull() &&
+      detail::IsCallerInPlatformDex(caller->GetClassLoader(), caller->GetDexCache());
 }
 
 // Returns true if access to `member` should be denied to a caller loaded with
@@ -286,7 +177,7 @@
                                       ObjPtr<mirror::DexCache> caller_dex_cache,
                                       AccessMethod access_method)
     REQUIRES_SHARED(Locks::mutator_lock_) {
-  bool caller_in_platform = IsCallerInPlatformDex(caller_class_loader, caller_dex_cache);
+  bool caller_in_platform = detail::IsCallerInPlatformDex(caller_class_loader, caller_dex_cache);
   return ShouldBlockAccessToMember(member,
                                    /* thread */ nullptr,
                                    [caller_in_platform] (Thread*) { return caller_in_platform; },
diff --git a/runtime/hidden_api_test.cc b/runtime/hidden_api_test.cc
index 190d2cb..5a31dd4 100644
--- a/runtime/hidden_api_test.cc
+++ b/runtime/hidden_api_test.cc
@@ -21,6 +21,8 @@
 
 namespace art {
 
+using hiddenapi::detail::MemberSignature;
+
 class HiddenApiTest : public CommonRuntimeTest {
  protected:
   void SetUp() OVERRIDE {
@@ -102,172 +104,172 @@
 TEST_F(HiddenApiTest, CheckEverythingMatchesL) {
   ScopedObjectAccess soa(self_);
   std::string prefix("L");
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_field1_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_field12_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_init_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_method1_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_method1_i_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class12_field1_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class12_method1_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_method12_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class2_field1_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class2_method1_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class2_method1_i_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class3_field1_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class3_method1_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class3_method1_i_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_field1_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_field12_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_init_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_method1_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_method1_i_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class12_field1_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class12_method1_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_method12_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class2_field1_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class2_method1_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class2_method1_i_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class3_field1_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class3_method1_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class3_method1_i_).DoesPrefixMatch(prefix));
 }
 
 TEST_F(HiddenApiTest, CheckPackageMatch) {
   ScopedObjectAccess soa(self_);
   std::string prefix("Lmypackage/packagea/");
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_field1_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_field12_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_init_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_method1_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_method1_i_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_method12_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class12_field1_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class12_method1_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class2_field1_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class2_method1_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class2_method1_i_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class3_field1_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class3_method1_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class3_method1_i_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_field1_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_field12_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_init_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_method1_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_method1_i_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_method12_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class12_field1_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class12_method1_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class2_field1_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class2_method1_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class2_method1_i_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class3_field1_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class3_method1_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class3_method1_i_).DoesPrefixMatch(prefix));
 }
 
 TEST_F(HiddenApiTest, CheckClassMatch) {
   ScopedObjectAccess soa(self_);
   std::string prefix("Lmypackage/packagea/Class1");
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_field1_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_field12_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_init_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_method1_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_method1_i_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_method12_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class12_field1_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class12_method1_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class2_field1_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class2_method1_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class2_method1_i_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_field1_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_field12_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_init_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_method1_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_method1_i_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_method12_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class12_field1_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class12_method1_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class2_field1_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class2_method1_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class2_method1_i_).DoesPrefixMatch(prefix));
 }
 
 TEST_F(HiddenApiTest, CheckClassExactMatch) {
   ScopedObjectAccess soa(self_);
   std::string prefix("Lmypackage/packagea/Class1;");
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_field1_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_field12_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_init_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_method1_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_method1_i_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class12_field1_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class12_method1_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class2_field1_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class2_method1_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class2_method1_i_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_field1_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_field12_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_init_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_method1_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_method1_i_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class12_field1_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class12_method1_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class2_field1_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class2_method1_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class2_method1_i_).DoesPrefixMatch(prefix));
 }
 
 TEST_F(HiddenApiTest, CheckMethodMatch) {
   ScopedObjectAccess soa(self_);
   std::string prefix("Lmypackage/packagea/Class1;->method1");
-  ASSERT_FALSE(hiddenapi::MemberSignature(class1_field1_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class1_field12_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class1_init_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_method1_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_method1_i_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_method12_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class12_field1_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class12_method1_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class1_field1_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class1_field12_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class1_init_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_method1_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_method1_i_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_method12_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class12_field1_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class12_method1_).DoesPrefixMatch(prefix));
 }
 
 TEST_F(HiddenApiTest, CheckMethodExactMatch) {
   ScopedObjectAccess soa(self_);
   std::string prefix("Lmypackage/packagea/Class1;->method1(");
-  ASSERT_FALSE(hiddenapi::MemberSignature(class1_field1_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class1_field12_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class1_init_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_method1_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_method1_i_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class1_method12_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class1_field1_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class1_field12_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class1_init_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_method1_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_method1_i_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class1_method12_).DoesPrefixMatch(prefix));
 }
 
 TEST_F(HiddenApiTest, CheckMethodSignatureMatch) {
   ScopedObjectAccess soa(self_);
   std::string prefix("Lmypackage/packagea/Class1;->method1(I)");
-  ASSERT_FALSE(hiddenapi::MemberSignature(class1_field1_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class1_field12_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class1_method1_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_method1_i_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class1_method12_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class1_field1_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class1_field12_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class1_method1_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_method1_i_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class1_method12_).DoesPrefixMatch(prefix));
 }
 
 TEST_F(HiddenApiTest, CheckMethodSignatureAndReturnMatch) {
   ScopedObjectAccess soa(self_);
   std::string prefix("Lmypackage/packagea/Class1;->method1()V");
-  ASSERT_FALSE(hiddenapi::MemberSignature(class1_field1_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class1_field12_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_method1_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class1_method1_i_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class1_method12_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class1_field1_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class1_field12_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_method1_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class1_method1_i_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class1_method12_).DoesPrefixMatch(prefix));
 }
 
 TEST_F(HiddenApiTest, CheckFieldMatch) {
   ScopedObjectAccess soa(self_);
   std::string prefix("Lmypackage/packagea/Class1;->field1");
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_field1_).DoesPrefixMatch(prefix));
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_field12_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class1_method1_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class1_method1_i_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class1_method12_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_field1_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_field12_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class1_method1_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class1_method1_i_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class1_method12_).DoesPrefixMatch(prefix));
 }
 
 TEST_F(HiddenApiTest, CheckFieldExactMatch) {
   ScopedObjectAccess soa(self_);
   std::string prefix("Lmypackage/packagea/Class1;->field1:");
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_field1_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class1_field12_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class1_method1_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_field1_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class1_field12_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class1_method1_).DoesPrefixMatch(prefix));
 }
 
 TEST_F(HiddenApiTest, CheckFieldTypeMatch) {
   ScopedObjectAccess soa(self_);
   std::string prefix("Lmypackage/packagea/Class1;->field1:I");
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_field1_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class1_field12_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class1_method1_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_field1_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class1_field12_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class1_method1_).DoesPrefixMatch(prefix));
 }
 
 TEST_F(HiddenApiTest, CheckConstructorMatch) {
   ScopedObjectAccess soa(self_);
   std::string prefix("Lmypackage/packagea/Class1;-><init>");
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_init_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class1_method1_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_init_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class1_method1_).DoesPrefixMatch(prefix));
 }
 
 TEST_F(HiddenApiTest, CheckConstructorExactMatch) {
   ScopedObjectAccess soa(self_);
   std::string prefix("Lmypackage/packagea/Class1;-><init>()V");
-  ASSERT_TRUE(hiddenapi::MemberSignature(class1_init_).DoesPrefixMatch(prefix));
-  ASSERT_FALSE(hiddenapi::MemberSignature(class1_method1_).DoesPrefixMatch(prefix));
+  ASSERT_TRUE(MemberSignature(class1_init_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class1_method1_).DoesPrefixMatch(prefix));
 }
 
 TEST_F(HiddenApiTest, CheckMethodSignatureTrailingCharsNoMatch) {
   ScopedObjectAccess soa(self_);
   std::string prefix("Lmypackage/packagea/Class1;->method1()Vfoo");
-  ASSERT_FALSE(hiddenapi::MemberSignature(class1_method1_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class1_method1_).DoesPrefixMatch(prefix));
 }
 
 TEST_F(HiddenApiTest, CheckConstructorTrailingCharsNoMatch) {
   ScopedObjectAccess soa(self_);
   std::string prefix("Lmypackage/packagea/Class1;-><init>()Vfoo");
-  ASSERT_FALSE(hiddenapi::MemberSignature(class1_init_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class1_init_).DoesPrefixMatch(prefix));
 }
 
 TEST_F(HiddenApiTest, CheckFieldTrailingCharsNoMatch) {
   ScopedObjectAccess soa(self_);
   std::string prefix("Lmypackage/packagea/Class1;->field1:Ifoo");
-  ASSERT_FALSE(hiddenapi::MemberSignature(class1_field1_).DoesPrefixMatch(prefix));
+  ASSERT_FALSE(MemberSignature(class1_field1_).DoesPrefixMatch(prefix));
 }
 
 }  // namespace art
diff --git a/runtime/mirror/class-inl.h b/runtime/mirror/class-inl.h
index f0898f4..72b3179 100644
--- a/runtime/mirror/class-inl.h
+++ b/runtime/mirror/class-inl.h
@@ -31,7 +31,6 @@
 #include "dex/invoke_type.h"
 #include "dex_cache.h"
 #include "gc/heap-inl.h"
-#include "hidden_api.h"
 #include "iftable.h"
 #include "subtype_check.h"
 #include "object-inl.h"
diff --git a/runtime/native/dalvik_system_ZygoteHooks.cc b/runtime/native/dalvik_system_ZygoteHooks.cc
index d9a5096..cf0a72a 100644
--- a/runtime/native/dalvik_system_ZygoteHooks.cc
+++ b/runtime/native/dalvik_system_ZygoteHooks.cc
@@ -27,6 +27,7 @@
 #include "base/mutex.h"
 #include "base/runtime_debug.h"
 #include "debugger.h"
+#include "hidden_api.h"
 #include "java_vm_ext.h"
 #include "jit/jit.h"
 #include "jni_internal.h"
diff --git a/runtime/runtime.cc b/runtime/runtime.cc
index bb76e61..00ccc19 100644
--- a/runtime/runtime.cc
+++ b/runtime/runtime.cc
@@ -86,6 +86,7 @@
 #include "gc/space/space-inl.h"
 #include "gc/system_weak.h"
 #include "handle_scope-inl.h"
+#include "hidden_api.h"
 #include "image-inl.h"
 #include "instrumentation.h"
 #include "intern_table.h"