Revert "Convert sync_clock_jni to Android.bp"

This reverts commit d4e5f84fbee26cf0c8bf99e807539fbbcf159dd4.
ndkbuild does not support Android.bp yet.

Bug: 149721303
Test: `mma -j48` in android/WALT
Change-Id: Iaf060a65dc95e74f7d59338c4b740e49cf2a8035
Signed-off-by: Tai Kuo <taikuo@google.com>
diff --git a/android/WALT/app/src/main/jni/Android.bp b/android/WALT/app/src/main/jni/Android.bp
deleted file mode 100644
index a789f4b..0000000
--- a/android/WALT/app/src/main/jni/Android.bp
+++ /dev/null
@@ -1,37 +0,0 @@
-// Copyright (C) 2015 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.
-//
-
-cc_library_shared {
-    name: "sync_clock_jni",
-    srcs: [
-        "sync_clock_jni.c",
-        "sync_clock.c",
-        "player.c",
-    ],
-
-    cflags: [
-        "-g",
-        "-DUSE_LIBLOG",
-        "-Werror",
-    ],
-
-    shared_libs: [
-        // needed for logcat
-        "libcutils",
-
-        "libOpenSLES",
-        "liblog",
-    ],
-}
diff --git a/android/WALT/app/src/main/jni/Android.mk b/android/WALT/app/src/main/jni/Android.mk
new file mode 100644
index 0000000..3307036
--- /dev/null
+++ b/android/WALT/app/src/main/jni/Android.mk
@@ -0,0 +1,30 @@
+# Copyright (C) 2015 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.
+#
+
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE    := sync_clock_jni
+LOCAL_SRC_FILES := sync_clock_jni.c sync_clock.c player.c
+
+LOCAL_CFLAGS := -g -DUSE_LIBLOG -Werror
+
+# needed for logcat
+LOCAL_SHARED_LIBRARIES := libcutils
+
+LOCAL_LDLIBS := -lOpenSLES -llog
+
+include $(BUILD_SHARED_LIBRARY)