Disable sanitizer coverage flags for gatekeeper.

The current version of Clang compiler crashes, while compiling libgatekeeper,
if --sanitizer-coverage=edge is specified. Temporary disable coverage flags.

Bug: 25119481

Change-Id: I30659a8a1eff4fc91e0e39f94444f71e68b5f4a5
diff --git a/Android.mk b/Android.mk
index 20ebbcb..677118f 100644
--- a/Android.mk
+++ b/Android.mk
@@ -29,6 +29,11 @@
 LOCAL_MODULE_TAGS := optional
 LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)/include
 LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
+# TODO(krasin): reenable coverage flags, when the new Clang toolchain is released.
+# Currently, if enabled, these flags will cause an internal error in Clang.
+# Bug: 25119481
+LOCAL_CLANG_CFLAGS += -fno-sanitize-coverage=edge,indirect-calls,8bit-counters,trace-cmp
+
 include $(BUILD_SHARED_LIBRARY)
 
 include $(call first-makefiles-under,$(LOCAL_PATH))