Implement SkPicture::bytesUsed() for SkRecord backend

src/core/SkQuadTree.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 SkQuadTree_DEFINED
 #define SkQuadTree_DEFINED
 
@@ skipping 54 matching lines @@
 
     /**
      * This gets the insertion count (rather than the node count)
      */
     virtual int getCount() const SK_OVERRIDE {
         return fEntryPool.allocated() - fEntryPool.available();
     }
 
     virtual void rewindInserts() SK_OVERRIDE;
 
+    virtual size_t bytesUsed() const SK_OVERRIDE;
+
 private:
     struct Entry {
         Entry() : fData(NULL) {}
         SkIRect fBounds;
         void* fData;
         SK_DECLARE_INTERNAL_SLIST_INTERFACE(Entry);
     };
 
     static const int kChildCount = 4;
 
@@ skipping 19 matching lines @@
     void insert(Node* node, Entry* entry);
     void split(Node* node);
     void search(Node* node, const SkIRect& query, SkTDArray<void*>* results) const;
     void clear(Node* node);
     int getDepth(Node* node) const;
 
     typedef SkBBoxHierarchy INHERITED;
 };
 
 #endif