Remove a |readonly| member of MediaStreamTrack

content/renderer/media/canvas_capture_handler.cc

 // Copyright 2015 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/canvas_capture_handler.h"
 
 #include <utility>
 
 #include "base/base64.h"
 #include "base/bind_helpers.h"
@@ skipping 262 matching lines @@
     std::unique_ptr<media::VideoCapturerSource> source,
     blink::WebMediaStreamTrack* web_track) {
   std::string str_track_id;
   base::Base64Encode(base::RandBytesAsString(64), &str_track_id);
   const blink::WebString track_id = base::UTF8ToUTF16(str_track_id);
   blink::WebMediaStreamSource webkit_source;
   std::unique_ptr<MediaStreamVideoSource> media_stream_source(
       new MediaStreamVideoCapturerSource(
           MediaStreamSource::SourceStoppedCallback(), std::move(source)));
   webkit_source.initialize(track_id, blink::WebMediaStreamSource::TypeVideo,
-                           track_id, false, true);
+                           track_id, false);
   webkit_source.setExtraData(media_stream_source.get());
 
   web_track->initialize(webkit_source);
   blink::WebMediaConstraints constraints;
   constraints.initialize();
   web_track->setExtraData(new MediaStreamVideoTrack(
       media_stream_source.release(), constraints,
       MediaStreamVideoSource::ConstraintsCallback(), true));
 }
 
 }  // namespace content