Remove unused parameters from MediaStreamVideoSource::StartCaptureImpl()

content/renderer/media/mock_media_stream_video_source.cc

 // 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.
 
 #include "content/renderer/media/mock_media_stream_video_source.h"
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/location.h"
 
@@ skipping 39 matching lines @@
   if (respond_to_request_refresh_frame_) {
     const scoped_refptr<media::VideoFrame> frame =
         media::VideoFrame::CreateColorFrame(format_.frame_size, 0, 0, 0,
                                             base::TimeDelta());
     io_task_runner()->PostTask(
         FROM_HERE, base::Bind(frame_callback_, frame, base::TimeTicks()));
   }
 }
 
 void MockMediaStreamVideoSource::StartSourceImpl(
-    const media::VideoCaptureFormat& format,
-    const blink::WebMediaConstraints& constraints,
     const VideoCaptureDeliverFrameCB& frame_callback) {
   DCHECK(frame_callback_.is_null());
   attempted_to_start_ = true;
   frame_callback_ = frame_callback;
 }
 
 void MockMediaStreamVideoSource::StopSourceImpl() {
 }
 
 base::Optional<media::VideoCaptureFormat>
 MockMediaStreamVideoSource::GetCurrentFormatImpl() const {
   return base::Optional<media::VideoCaptureFormat>(format_);
 }
 
 void MockMediaStreamVideoSource::DeliverVideoFrame(
     const scoped_refptr<media::VideoFrame>& frame) {
   DCHECK(!frame_callback_.is_null());
   io_task_runner()->PostTask(
       FROM_HERE, base::Bind(frame_callback_, frame, base::TimeTicks()));
 }
 
 }  // namespace content