Image Capture: Move files out of content/renderer/media to replicate WebKit's structure

content/renderer/media/image_capture_frame_grabber.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 CONTENT_RENDERER_MEDIA_IMAGE_CAPTURE_FRAME_GRABBER_H_
-#define CONTENT_RENDERER_MEDIA_IMAGE_CAPTURE_FRAME_GRABBER_H_
-
-#include "base/compiler_specific.h"
-#include "base/macros.h"
-#include "base/memory/weak_ptr.h"
-#include "base/threading/thread_checker.h"
-#include "content/child/scoped_web_callbacks.h"
-#include "content/common/content_export.h"
-#include "content/public/renderer/media_stream_video_sink.h"
-#include "third_party/WebKit/public/platform/WebImageCaptureFrameGrabber.h"
-
-namespace blink {
-class WebMediaStreamTrack;
-}
-
-namespace content {
-
-// This class grabs Video Frames from a given Media Stream Video Track, binding
-// a method of an ephemeral SingleShotFrameHandler every time grabFrame() is
-// called. This method receives an incoming media::VideoFrame on a background
-// thread and converts it into the appropriate SkBitmap which is sent back to
-// OnSkBitmap(). This class is single threaded throughout.
-class CONTENT_EXPORT ImageCaptureFrameGrabber final
-    : NON_EXPORTED_BASE(public blink::WebImageCaptureFrameGrabber),
-      NON_EXPORTED_BASE(public MediaStreamVideoSink) {
- public:
-  using SkImageDeliverCB = base::Callback<void(sk_sp<SkImage>)>;
-
-  ImageCaptureFrameGrabber();
-  ~ImageCaptureFrameGrabber() override;
-
-  // blink::WebImageCaptureFrameGrabber implementation.
-  void grabFrame(blink::WebMediaStreamTrack* track,
-                 blink::WebImageCaptureGrabFrameCallbacks* callbacks) override;
-
- private:
-  // Internal class to receive, convert and forward one frame.
-  class SingleShotFrameHandler;
-
-  void OnSkImage(
-      ScopedWebCallbacks<blink::WebImageCaptureGrabFrameCallbacks> callbacks,
-      sk_sp<SkImage> image);
-
-  // Flag to indicate that there is a frame grabbing in progress.
-  bool frame_grab_in_progress_;
-
-  base::ThreadChecker thread_checker_;
-  base::WeakPtrFactory<ImageCaptureFrameGrabber> weak_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(ImageCaptureFrameGrabber);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_RENDERER_MEDIA_IMAGE_CAPTURE_FRAME_GRABBER_H_