Limit image filtering during scale animations

cc/playback/display_list_raster_source.h

Index: cc/playback/display_list_raster_source.h
diff --git a/cc/playback/display_list_raster_source.h b/cc/playback/display_list_raster_source.h
index f9df1964f66c6208065da73aeef6d463be33424e..78837ea347c88f4d2255b61ddb4e427d8bd16682 100644
--- a/cc/playback/display_list_raster_source.h
+++ b/cc/playback/display_list_raster_source.h
@@ -118,6 +118,12 @@ class CC_EXPORT DisplayListRasterSource
   bool OnMemoryDump(const base::trace_event::MemoryDumpArgs& args,
                     base::trace_event::ProcessMemoryDump* pmd) override;
 
+  enum class ImageScalingOptimization {
+    Animation,  // Optimize for smooth/continuous transitions.
+    Static,     // Optimize for high-quality static content.
+  };
+  void SetImageScalingOptimization(ImageScalingOptimization);
+
  protected:
   friend class base::RefCountedThreadSafe<DisplayListRasterSource>;
 
@@ -169,6 +175,8 @@ class CC_EXPORT DisplayListRasterSource
   // Used to ensure that memory dump logic always happens on the same thread.
   base::ThreadChecker memory_dump_thread_checker_;
 
+  ImageScalingOptimization image_scaling_optimization_;
+
   DISALLOW_COPY_AND_ASSIGN(DisplayListRasterSource);
 };