cc: Remove AsValue virtual from DisplayItem.

cc/playback/clip_display_item.h

Index: cc/playback/clip_display_item.h
diff --git a/cc/playback/clip_display_item.h b/cc/playback/clip_display_item.h
index 8ab86aeeaeb634ad0ffa382d9a50d08076fa09b2..5830f96ada188f3e0f24b15f00aa269b8764c9e0 100644
--- a/cc/playback/clip_display_item.h
+++ b/cc/playback/clip_display_item.h
@@ -28,14 +28,17 @@ class CC_EXPORT ClipDisplayItem : 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 rounded_clip_rects_.capacity() * sizeof(rounded_clip_rects_[0]);
   }
   int ApproximateOpCount() const { return 1; }
 
+  const gfx::Rect& clip_rect() const { return clip_rect_; }
+  const std::vector<SkRRect>& rounded_clip_rects() const {
+    return rounded_clip_rects_;
+  }
+
  private:
   void SetNew(const gfx::Rect& clip_rect,
               const std::vector<SkRRect>& rounded_clip_rects,
@@ -53,8 +56,6 @@ class CC_EXPORT EndClipDisplayItem : 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; }
 };