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 @@
         entries.push(e);
     }
     virtual int getCount() const SK_OVERRIDE { return entries.count(); }
 
     virtual void flushDeferredInserts() SK_OVERRIDE {}
 
     virtual void search(const SkIRect& query, SkTDArray<void*>* results) const SK_OVERRIDE {}
     virtual void clear() SK_OVERRIDE {}
     virtual void rewindInserts() SK_OVERRIDE {}
     virtual int getDepth() const SK_OVERRIDE { return -1; }
+    virtual size_t bytesUsed() const SK_OVERRIDE { return 0; }
 
     struct Entry {
         uintptr_t data;
         SkIRect bounds;
     };
     SkTDArray<Entry> entries;
 };
 
 // This test is not meant to make total sense yet.  It's testing the status quo
 // of SkRecordFillBounds(), which itself doesn't make total sense yet.
@@ skipping 11 matching lines @@
 
     SkRecordFillBounds(record, &bbh);
 
     REPORTER_ASSERT(r, bbh.entries.count() == 5);
     for (int i = 0; i < bbh.entries.count(); i++) {
         REPORTER_ASSERT(r, bbh.entries[i].data == (uintptr_t)i);
 
         REPORTER_ASSERT(r, bbh.entries[i].bounds == SkIRect::MakeWH(400, 480));
     }
 }