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

third_party/WebKit/Source/core/imagebitmap/ImageBitmapFactories.cpp

 /*
  * Copyright (c) 2013, Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 173 matching lines @@
 }
 
 void ImageBitmapFactories::ImageBitmapLoader::rejectPromise()
 {
     m_resolver->reject(DOMException::create(InvalidStateError, "The source image cannot be decoded."));
     m_factory->didFinishLoading(this);
 }
 
 void ImageBitmapFactories::ImageBitmapLoader::didFinishLoading()
 {
-    DOMArrayBuffer* arrayBuffer = m_loader.arrayBufferResult();
-    if (!arrayBuffer) {
+    if (!m_loader.arrayBufferResult()) {
         rejectPromise();
         return;
     }
-    scheduleAsyncImageBitmapDecoding(arrayBuffer);
+    scheduleAsyncImageBitmapDecoding();
 }
 
 void ImageBitmapFactories::ImageBitmapLoader::didFail(FileError::ErrorCode)
 {
     rejectPromise();
 }
 
-void ImageBitmapFactories::ImageBitmapLoader::scheduleAsyncImageBitmapDecoding(DOMArrayBuffer* arrayBuffer)
+void ImageBitmapFactories::ImageBitmapLoader::scheduleAsyncImageBitmapDecoding()
 {
     // For a 4000*4000 png image where each 10*10 tile is filled in by a random RGBA value,
     // the byteLength is around 2M, and it typically takes around 4.5ms to decode on a
     // current model of Linux desktop.
     const int longTaskByteLengthThreshold = 2000000;
-    BackgroundTaskRunner::TaskSize taskSize = BackgroundTaskRunner::TaskSizeShortRunningTask;
-    if (arrayBuffer->byteLength() >= longTaskByteLengthThreshold)
-        taskSize = BackgroundTaskRunner::TaskSizeLongRunningTask;
+    BackgroundTaskRunner::TaskSize taskSize = (m_loader.arrayBufferResult()->byteLength() >= longTaskByteLengthThreshold) ? BackgroundTaskRunner::TaskSizeLongRunningTask : BackgroundTaskRunner::TaskSizeShortRunningTask;
     WebTaskRunner* taskRunner = Platform::current()->currentThread()->getWebTaskRunner();
-    BackgroundTaskRunner::postOnBackgroundThread(BLINK_FROM_HERE, threadSafeBind(&ImageBitmapFactories::ImageBitmapLoader::decodeImageOnDecoderThread, AllowCrossThreadAccess(this), AllowCrossThreadAccess(taskRunner), AllowCrossThreadAccess(arrayBuffer)), taskSize);
+    BackgroundTaskRunner::postOnBackgroundThread(BLINK_FROM_HERE, threadSafeBind(&ImageBitmapFactories::ImageBitmapLoader::decodeImageOnDecoderThread, AllowCrossThreadAccess(this), AllowCrossThreadAccess(taskRunner)), taskSize);
 }
 
-void ImageBitmapFactories::ImageBitmapLoader::decodeImageOnDecoderThread(WebTaskRunner* taskRunner, DOMArrayBuffer* arrayBuffer)
+void ImageBitmapFactories::ImageBitmapLoader::decodeImageOnDecoderThread(WebTaskRunner* taskRunner)
 {
     ASSERT(!isMainThread());
-    RefPtr<SharedBuffer> sharedBuffer = SharedBuffer::create(static_cast<char*>(arrayBuffer->data()), static_cast<size_t>(arrayBuffer->byteLength()));
+    RefPtr<SharedBuffer> sharedBuffer = SharedBuffer::create((char*)m_loader.arrayBufferResult()->data(), static_cast<size_t>(m_loader.arrayBufferResult()->byteLength()));
 
     ImageDecoder::AlphaOption alphaOp = ImageDecoder::AlphaPremultiplied;
     if (m_options.premultiplyAlpha() == "none")
         alphaOp = ImageDecoder::AlphaNotPremultiplied;
     ImageDecoder::GammaAndColorProfileOption colorspaceOp = ImageDecoder::GammaAndColorProfileApplied;
     if (m_options.colorspaceConversion() == "none")
         colorspaceOp = ImageDecoder::GammaAndColorProfileIgnored;
     OwnPtr<ImageDecoder> decoder(ImageDecoder::create(*sharedBuffer, alphaOp, colorspaceOp));
     RefPtr<SkImage> frame;
     if (decoder) {
@@ skipping 28 matching lines @@
     m_factory->didFinishLoading(this);
 }
 
 DEFINE_TRACE(ImageBitmapFactories::ImageBitmapLoader)
 {
     visitor->trace(m_factory);
     visitor->trace(m_resolver);
 }
 
 } // namespace blink