Frameworks/base: Wall Werror in native/graphics

Turn on -Wall -Werror in native/graphics. Mask skia warnings.

Change-Id: Ia671e91348296ace84d9a24b3c6c025fa889bead

native/graphics/jni/Android.mk

@@ -6,27 +6,29 @@ include $(CLEAR_VARS)
 # setup for skia optimizations
 #
 ifneq ($(ARCH_ARM_HAVE_VFP),true)
-	LOCAL_CFLAGS += -DSK_SOFTWARE_FLOAT
+    LOCAL_CFLAGS += -DSK_SOFTWARE_FLOAT
 endif
 
 ifeq ($(ARCH_ARM_HAVE_NEON),true)
-	LOCAL_CFLAGS += -D__ARM_HAVE_NEON
+    LOCAL_CFLAGS += -D__ARM_HAVE_NEON
 endif
 
 # our source files
 #
 LOCAL_SRC_FILES:= \
-	bitmap.cpp
+    bitmap.cpp
 
 LOCAL_SHARED_LIBRARIES := \
     libandroid_runtime \
     libskia
 
 LOCAL_C_INCLUDES += \
-	frameworks/base/native/include \
-	frameworks/base/core/jni/android/graphics
+    frameworks/base/native/include \
+    frameworks/base/core/jni/android/graphics
 
 LOCAL_MODULE:= libjnigraphics
 
+LOCAL_CFLAGS += -Wall -Werror -Wunused -Wunreachable-code
+
 include $(BUILD_SHARED_LIBRARY)
 

native/graphics/jni/bitmap.cpp

@@ -15,7 +15,11 @@
  */
 
 #include <android/bitmap.h>
+
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-parameter"
 #include <GraphicsJNI.h>
+#pragma GCC diagnostic pop
 
 int AndroidBitmap_getInfo(JNIEnv* env, jobject jbitmap,
                           AndroidBitmapInfo* info) {