cc: Remove AsValue virtual from DisplayItem.

cc/playback/clip_path_display_item.h

Index: cc/playback/clip_path_display_item.h
diff --git a/cc/playback/clip_path_display_item.h b/cc/playback/clip_path_display_item.h
index f736b02314845aeeab674221369bc4d54adb1144..3cb6dc8609b3018bc66bf8198b2879057d05a038 100644
--- a/cc/playback/clip_path_display_item.h
+++ b/cc/playback/clip_path_display_item.h
@@ -25,8 +25,6 @@ class CC_EXPORT ClipPathDisplayItem : 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 {
     // The size of SkPath's external storage is not currently accounted for (and
@@ -35,6 +33,8 @@ class CC_EXPORT ClipPathDisplayItem : public DisplayItem {
   }
   int ApproximateOpCount() const { return 1; }
 
+  const SkPath& clip_path() const { return clip_path_; }
+
  private:
   void SetNew(const SkPath& path, bool antialias);
 
@@ -53,8 +53,6 @@ class CC_EXPORT EndClipPathDisplayItem : 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; }
 };