Reland: Introduce GpuVideoDecodeAcceleratorFactory.

content/common/gpu/media/rendering_helper.h

 // Copyright (c) 2012 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_RENDERING_HELPER_H_
 #define CONTENT_COMMON_GPU_MEDIA_RENDERING_HELPER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 117 matching lines @@
   // more video frames.
   void Flush(size_t window_id);
 
   // Delete |texture_id|.
   void DeleteTexture(uint32_t texture_id);
 
   // Get the platform specific handle to the OpenGL display.
   void* GetGLDisplay();
 
   // Get the GL context.
-  scoped_refptr<gfx::GLContext> GetGLContext();
-
-  // Get the platform specific handle to the OpenGL context.
-  void* GetGLContextHandle();
+  gfx::GLContext* GetGLContext();
 
   // Get rendered thumbnails as RGB.
   // Sets alpha_solid to true if the alpha channel is entirely 0xff.
   void GetThumbnailsAsRGB(std::vector<unsigned char>* rgb,
                           bool* alpha_solid,
                           base::WaitableEvent* done);
 
  private:
   struct RenderedVideo {
     // The rect on the screen where the video will be rendered.
@@ skipping 69 matching lines @@
   base::CancelableClosure render_task_;
   base::TimeTicks vsync_timebase_;
   base::TimeDelta vsync_interval_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderingHelper);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_MEDIA_RENDERING_HELPER_H_