cc: Remove AsValue virtual from DisplayItem.

cc/playback/transform_display_item.h

Index: cc/playback/transform_display_item.h
diff --git a/cc/playback/transform_display_item.h b/cc/playback/transform_display_item.h
index 75ef6da852ad20ab57a460bee5367d29d9f979f7..25eb755ad0916fc5d87f5ae4967f9a559630428b 100644
--- a/cc/playback/transform_display_item.h
+++ b/cc/playback/transform_display_item.h
@@ -25,12 +25,12 @@ class CC_EXPORT TransformDisplayItem : public DisplayItem {
 
   void Raster(SkCanvas* canvas,
               SkPicture::AbortCallback* callback) const override;
-  void AsValueInto(const gfx::Rect& visual_rect,
-                   base::trace_event::TracedValue* array) const override;
 
   size_t ExternalMemoryUsage() const { return 0; }
   int ApproximateOpCount() const { return 1; }
 
+  const gfx::Transform& transform() const { return transform_; }
+
  private:
   void SetNew(const gfx::Transform& transform);
 
@@ -48,8 +48,6 @@ class CC_EXPORT EndTransformDisplayItem : public DisplayItem {
 
   void Raster(SkCanvas* canvas,
               SkPicture::AbortCallback* callback) const override;
-  void AsValueInto(const gfx::Rect& visual_rect,
-                   base::trace_event::TracedValue* array) const override;
 
   int ApproximateOpCount() const { return 0; }
 };