Add capture snapshot as data to SkWriter32, use it to optimise record->playback.

src/core/SkPicturePlayback.cpp

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "SkPicturePlayback.h"
 #include "SkPictureRecord.h"
 #include "SkTypeface.h"
@@ skipping 66 matching lines @@
     fBoundingHierarchy = record.fBoundingHierarchy;
     fStateTree = record.fStateTree;
 
     SkSafeRef(fBoundingHierarchy);
     SkSafeRef(fStateTree);
 
     if (NULL != fBoundingHierarchy) {
         fBoundingHierarchy->flushDeferredInserts();
     }
 
-    {
-        size_t size = writer.bytesWritten();
-        void* buffer = sk_malloc_throw(size);
-        writer.flatten(buffer);
-        SkASSERT(!fOpData);
-        fOpData = SkData::NewFromMalloc(buffer, size);
-    }
+    SkASSERT(!fOpData);
+    fOpData = writer.snapshotAsData();
 
     // copy over the refcnt dictionary to our reader
     record.fFlattenableHeap.setupPlaybacks();
 
     fBitmaps = record.fBitmapHeap->extractBitmaps();
     fPaints = record.fPaints.unflattenToArray();
 
     fBitmapHeap.reset(SkSafeRef(record.fBitmapHeap));
     fPathHeap.reset(SkSafeRef(record.fPathHeap));
 
@@ skipping 1526 matching lines @@
     for (index = 0; index < fPictureCount; index++)
         bufferPtr += snprintf(bufferPtr, DUMP_BUFFER_SIZE - (bufferPtr - pBuffer),
             "picture%p, ", fPictureRefs[index]);
     if (fPictureCount > 0)
         SkDebugf("%s0};\n", pBuffer);
 
     const_cast<SkPicturePlayback*>(this)->dumpStream();
 }
 
 #endif