Fixing SkPicture serialization

src/core/SkValidatingReadBuffer.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBitmap.h"
 #include "SkErrorInternals.h"
 #include "SkValidatingReadBuffer.h"
@@ skipping 195 matching lines @@
 
 uint32_t SkValidatingReadBuffer::getArrayCount() {
     const size_t inc = sizeof(uint32_t);
     fError = fError || !IsPtrAlign4(fReader.peek()) || !fReader.isAvailable(inc);
     return fError ? 0 : *(uint32_t*)fReader.peek();
 }
 
 void SkValidatingReadBuffer::readBitmap(SkBitmap* bitmap) {
     const int width = this->readInt();
     const int height = this->readInt();
+    const bool useBitmapHeap = this->readBool();
     const size_t length = this->readUInt();
     // A size of zero means the SkBitmap was simply flattened.
-    this->validate(length == 0);
-    if (fError) {
+    if (!this->validate(!useBitmapHeap && (0 == length))) {
         return;
     }
     bitmap->unflatten(*this);
     this->validate((bitmap->width() == width) && (bitmap->height() == height));
 }
 
 SkTypeface* SkValidatingReadBuffer::readTypeface() {
     // TODO: Implement this (securely) when needed
     return NULL;
 }
@@ skipping 36 matching lines @@
             delete obj;
             obj = NULL;
         }
     } else {
         // we must skip the remaining data
         this->skip(sizeRecorded);
         SkASSERT(false);
     }
     return obj;
 }