Spec compliant video constraints for getUserMedia behind flag.

content/renderer/media/media_stream_video_capturer_source.h

 // Copyright 2014 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_MEDIA_STREAM_VIDEO_CAPTURER_SOURCE_H_
 #define CONTENT_RENDERER_MEDIA_MEDIA_STREAM_VIDEO_CAPTURER_SOURCE_H_
 
+#include <memory>
+
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/thread_checker.h"
 #include "content/common/media/video_capture.h"
 #include "content/public/renderer/render_frame_observer.h"
 #include "content/renderer/media/media_stream_video_source.h"
 
 namespace media {
 class VideoCapturerSource;
 }  // namespace media
 
 namespace content {
 
 // Representation of a video stream coming from a camera, owned by Blink as
 // WebMediaStreamSource. Objects of this class are created and live on main
 // Render thread. Objects can be constructed either by indicating a |device| to
 // look for, or by plugging in a |source| constructed elsewhere.
 class CONTENT_EXPORT MediaStreamVideoCapturerSource
     : public MediaStreamVideoSource,
       public RenderFrameObserver {
  public:
   MediaStreamVideoCapturerSource(
       const SourceStoppedCallback& stop_callback,
       std::unique_ptr<media::VideoCapturerSource> source);
+  // TODO(guidou): Remove this constructor. http://crbug.com/706408
   MediaStreamVideoCapturerSource(const SourceStoppedCallback& stop_callback,
                                  const StreamDeviceInfo& device_info,
                                  RenderFrame* render_frame);
+  MediaStreamVideoCapturerSource(
+      const SourceStoppedCallback& stop_callback,
+      const StreamDeviceInfo& device_info,
+      const media::VideoCaptureParams& capture_params,
+      RenderFrame* render_frame);
   ~MediaStreamVideoCapturerSource() override;
 
  private:
   friend class CanvasCaptureHandlerTest;
   friend class MediaStreamVideoCapturerSourceTest;
 
   // MediaStreamVideoSource overrides.
   void RequestRefreshFrame() override;
   void OnHasConsumers(bool has_consumers) override;
   void OnCapturingLinkSecured(bool is_secure) override;
   void GetCurrentSupportedFormats(
       int max_requested_width,
       int max_requested_height,
       double max_requested_frame_rate,
       const VideoCaptureDeviceFormatsCB& callback) override;
   void StartSourceImpl(
       const media::VideoCaptureFormat& format,
       const blink::WebMediaConstraints& constraints,
       const VideoCaptureDeliverFrameCB& frame_callback) override;
   void StopSourceImpl() override;
+  base::Optional<media::VideoCaptureFormat> GetCurrentFormatImpl()
+      const override;
 
   // RenderFrameObserver implementation.
   void OnDestruct() final {}
 
   // Method to bind as RunningCallback in VideoCapturerSource::StartCapture().
   void OnRunStateChanged(bool is_running);
 
   const char* GetPowerLineFrequencyForTesting() const;
 
   // The source that provides video frames.
   const std::unique_ptr<media::VideoCapturerSource> source_;
 
   // Indicates whether the capture is in starting. It is set to true by
   // StartSourceImpl() when starting the capture, and is reset after starting
   // is completed.
   bool is_capture_starting_ = false;
 
+  media::VideoCaptureParams capture_params_;
+
   DISALLOW_COPY_AND_ASSIGN(MediaStreamVideoCapturerSource);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_MEDIA_STREAM_VIDEO_CAPTURER_SOURCE_H_