[tracing] Add memory usage of Android UI resources to memory-infra

ui/android/resources/crushed_sprite_resource.h

Index: ui/android/resources/crushed_sprite_resource.h
diff --git a/ui/android/resources/crushed_sprite_resource.h b/ui/android/resources/crushed_sprite_resource.h
index 9ffa25a7966656503bf1088c98d4432bf073bae8..43eb6b5ca05f9dd2896fbd3859d22f27153c2843 100644
--- a/ui/android/resources/crushed_sprite_resource.h
+++ b/ui/android/resources/crushed_sprite_resource.h
@@ -71,6 +71,9 @@ class UI_ANDROID_EXPORT CrushedSpriteResource {
   // Returns the total number of frames in the sprite animation.
   int GetFrameCount();
 
+  // Returns the memory usage of the bitmap.
+  size_t BytesUsed() const;
+
  private:
   SkBitmap bitmap_;
   std::unique_ptr<cc::ScopedUIResource> last_frame_resource_;