Check whether Java bitmap memory size is same to one of SkBitmap

ui/gfx/android/java_bitmap.h

Index: ui/gfx/android/java_bitmap.h
diff --git a/ui/gfx/android/java_bitmap.h b/ui/gfx/android/java_bitmap.h
index 31db157bd44c8dd631762cd1200387712988b4e9..6c615abb4c852e6ae0cfb558fe410476d666466e 100644
--- a/ui/gfx/android/java_bitmap.h
+++ b/ui/gfx/android/java_bitmap.h
@@ -37,6 +37,7 @@ class GFX_EXPORT JavaBitmap {
   // Formats are in android/bitmap.h; e.g. ANDROID_BITMAP_FORMAT_RGBA_8888
   inline int format() const { return format_; }
   inline uint32_t stride() const { return stride_; }
+  inline int byte_count() const { return byte_count_; }
 
   // Registers methods with JNI and returns true if succeeded.
   static bool RegisterJavaBitmap(JNIEnv* env);
@@ -47,6 +48,7 @@ class GFX_EXPORT JavaBitmap {
   gfx::Size size_;
   int format_;
   uint32_t stride_;
+  int byte_count_;
 
   DISALLOW_COPY_AND_ASSIGN(JavaBitmap);
 };