Revert of Merge VideoDecodeAcceleratorImpl with VideoDecodeAccelerator

content/common/gpu/media/video_decode_accelerator_impl.h

Index: content/common/gpu/media/video_decode_accelerator_impl.h
diff --git a/content/common/gpu/media/video_decode_accelerator_impl.h b/content/common/gpu/media/video_decode_accelerator_impl.h
new file mode 100644
index 0000000000000000000000000000000000000000..c0762a09e7aa3784f6598473ac1e365ca266b6cc
--- /dev/null
+++ b/content/common/gpu/media/video_decode_accelerator_impl.h
@@ -0,0 +1,50 @@
+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CONTENT_COMMON_GPU_MEDIA_VIDEO_DECODE_ACCELERATOR_IMPL_H_
+#define CONTENT_COMMON_GPU_MEDIA_VIDEO_DECODE_ACCELERATOR_IMPL_H_
+
+#include "content/common/content_export.h"
+#include "media/video/video_decode_accelerator.h"
+
+namespace content {
+
+class CONTENT_EXPORT VideoDecodeAcceleratorImpl
+    : public media::VideoDecodeAccelerator {
+ public:
+  VideoDecodeAcceleratorImpl();
+
+  // Returns true if VDA::Decode and VDA::Client callbacks can run on the IO
+  // thread. Otherwise they will run on the GPU child thread. The purpose of
+  // running Decode on the IO thread is to reduce decode latency. Note Decode
+  // should return as soon as possible and not block on the IO thread. Also,
+  // PictureReady should be run on the child thread if a picture is delivered
+  // the first time so it can be cleared.
+  virtual bool CanDecodeOnIOThread();
+
+ protected:
+  virtual ~VideoDecodeAcceleratorImpl();
+};
+
+}  // namespace content
+
+namespace base {
+
+template <class T>
+struct DefaultDeleter;
+
+// Specialize DefaultDeleter so that scoped_ptr<VideoDecodeAcceleratorImpl>
+// always uses "Destroy()" instead of trying to use the destructor.
+template <>
+struct DefaultDeleter<content::VideoDecodeAcceleratorImpl> {
+ public:
+  inline void operator()(void* video_decode_accelerator) const {
+    static_cast<content::VideoDecodeAcceleratorImpl*>(video_decode_accelerator)
+        ->Destroy();
+  }
+};
+
+}  // namespace base
+
+#endif  // CONTENT_COMMON_GPU_MEDIA_VIDEO_DECODE_ACCELERATOR_IMPL_H_