Implement SkPicture::bytesUsed() for SkRecord backend

tests/RecordDrawTest.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "Test.h"
 #include "RecordTestUtils.h"
 
@@ skipping 91 matching lines @@
 struct TestBBH : public SkBBoxHierarchy {
     virtual void insert(SkAutoTMalloc<SkRect>* boundsArray, int N) SK_OVERRIDE {
         fEntries.setCount(N);
         for (int i = 0; i < N; i++) {
             Entry e = { (unsigned)i, (*boundsArray)[i] };
             fEntries[i] = e;
         }
     }
 
     virtual void search(const SkRect& query, SkTDArray<unsigned>* results) const SK_OVERRIDE {}
+    virtual size_t bytesUsed() const SK_OVERRIDE { return 0; }
 
     struct Entry {
         unsigned opIndex;
         SkRect bounds;
     };
     SkTDArray<Entry> fEntries;
 };
 
 // Like a==b, with a little slop recognizing that float equality can be weird.
 static bool sloppy_rect_eq(SkRect a, SkRect b) {
@@ skipping 204 matching lines @@
 
     {
         SkRecord record;
         SkRecorder recorder(&record, 10, 10);
         recorder.drawImageRect(image, 0, SkRect::MakeWH(10, 10));
         SkRecordDraw(record, &canvas, 0, 0);
     }
     REPORTER_ASSERT(r, canvas.fDrawImageRectCalled);
 
 }