Support comment groups in SkRecord.

src/core/SkRecorder.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkRecorder_DEFINED
 #define SkRecorder_DEFINED
 
@@ skipping 89 matching lines @@
     void onClipRect(const SkRect& rect, SkRegion::Op op, ClipEdgeStyle edgeStyle) SK_OVERRIDE;
     void onClipRRect(const SkRRect& rrect, SkRegion::Op op, ClipEdgeStyle edgeStyle) SK_OVERRIDE;
     void onClipPath(const SkPath& path, SkRegion::Op op, ClipEdgeStyle edgeStyle) SK_OVERRIDE;
     void onClipRegion(const SkRegion& deviceRgn, SkRegion::Op op) SK_OVERRIDE;
 
     void onDrawPicture(const SkPicture*, const SkMatrix*, const SkPaint*) SK_OVERRIDE;
 
     void onPushCull(const SkRect& cullRect) SK_OVERRIDE;
     void onPopCull() SK_OVERRIDE;
 
+    void beginCommentGroup(const char*) SK_OVERRIDE;
+    void addComment(const char*, const char*) SK_OVERRIDE;
+    void endCommentGroup() SK_OVERRIDE;
+
 private:
     template <typename T>
     T* copy(const T*);
 
     template <typename T>
     T* copy(const T[], size_t count);
 
     SkIRect devBounds() const {
         SkIRect devBounds;
         this->getClipDeviceBounds(&devBounds);
         return devBounds;
     }
 
     SkRecord* fRecord;
 };
 
 #endif//SkRecorder_DEFINED