Update StreamTextureProxy to accept a base::Closure

media/blink/stream_texture_wrapper.h

-// Copyright 2016 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 MEDIA_BLINK_STREAM_TEXTURE_WRAPPER_H_
-#define MEDIA_BLINK_STREAM_TEXTURE_WRAPPER_H_
-
-#include "cc/layers/video_frame_provider.h"
-#include "media/base/video_frame.h"
-
-namespace media {
-class VideoFrame;
-
-// StreamTextureWrapper encapsulates a StreamTexture's creation, initialization
-// and registration for later retrieval (in the Browser process).
-//
-// TODO(tguilbert): Support registering the underlying SurfaceTexture so it can
-// be used by a MediaPlayer in the browser process. See crbug.com/627658.
-class MEDIA_EXPORT StreamTextureWrapper {
- public:
-  StreamTextureWrapper() {}
-
-  // Initialize the underlying StreamTexture.
-  // See StreamTextureWrapperImpl.
-  virtual void Initialize(
-      cc::VideoFrameProvider::Client* client,
-      const gfx::Size& natural_size,
-      scoped_refptr<base::SingleThreadTaskRunner> compositor_task_runner,
-      const base::Closure& init_cb) = 0;
-
-  // Called whenever the video's natural size changes.
-  // See StreamTextureWrapperImpl.
-  virtual void UpdateTextureSize(const gfx::Size& natural_size) = 0;
-
-  // Returns the latest frame.
-  // See StreamTextureWrapperImpl.
-  virtual scoped_refptr<VideoFrame> GetCurrentFrame() = 0;
-
-  struct Deleter {
-    inline void operator()(StreamTextureWrapper* ptr) const { ptr->Destroy(); }
-  };
-
- protected:
-  virtual ~StreamTextureWrapper() {}
-
-  // Safely destroys the StreamTextureWrapper.
-  // See StreamTextureWrapperImpl.
-  virtual void Destroy() = 0;
-};
-
-typedef std::unique_ptr<StreamTextureWrapper, StreamTextureWrapper::Deleter>
-    ScopedStreamTextureWrapper;
-
-}  // namespace media
-
-#endif  // MEDIA_BLINK_STREAM_TEXTURE_WRAPPER_H_