Revert of Move DOMArrayBuffer, DOMArrayBufferViews and DataView to the heap.

third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.cpp

 /*
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 1233 matching lines @@
     if (m_requestedAttributes.premultipliedAlpha())
         return nullptr;
 
     clearIfComposited();
     drawingBuffer()->commit();
     ScopedFramebufferRestorer restorer(this);
     int width, height;
     WTF::ArrayBufferContents contents;
     if (!drawingBuffer()->paintRenderingResultsToImageData(width, height, sourceBuffer, contents))
         return nullptr;
-    DOMArrayBuffer* imageDataPixels = DOMArrayBuffer::create(contents);
+    RefPtr<DOMArrayBuffer> imageDataPixels = DOMArrayBuffer::create(contents);
 
     return ImageData::create(
         IntSize(width, height),
         DOMUint8ClampedArray::create(imageDataPixels, 0, imageDataPixels->byteLength()));
 }
 
 void WebGLRenderingContextBase::reshape(int width, int height)
 {
     if (isContextLost())
         return;
@@ skipping 5049 matching lines @@
         contextGL()->PixelStorei(GL_UNPACK_ALIGNMENT, 1);
 }
 
 void WebGLRenderingContextBase::restoreUnpackParameters()
 {
     if (m_unpackAlignment != 1)
         contextGL()->PixelStorei(GL_UNPACK_ALIGNMENT, m_unpackAlignment);
 }
 
 } // namespace blink