Cleanup: Remove video constraint names

content/common/media/media_stream_options.cc

 // Copyright (c) 2012 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/common/media/media_stream_options.h"
 
 #include "base/logging.h"
 
 namespace content {
 
-const char kMediaStreamSource[] = "chromeMediaSource";
-const char kMediaStreamSourceId[] = "chromeMediaSourceId";
-const char kMediaStreamSourceInfoId[] = "sourceId";
 const char kMediaStreamSourceTab[] = "tab";
 const char kMediaStreamSourceScreen[] = "screen";
 const char kMediaStreamSourceDesktop[] = "desktop";
 const char kMediaStreamSourceSystem[] = "system";
-const char kMediaStreamRenderToAssociatedSink[] =
-    "chromeRenderToAssociatedSink";
-// The prefix of this constant is 'goog' to match with other getUserMedia
-// constraints for audio.
-const char kMediaStreamAudioHotword[] = "googHotword";
 
 TrackControls::TrackControls()
     : requested(false) {}
 
 TrackControls::TrackControls(bool request)
     : requested(request) {}
 
 TrackControls::TrackControls(const TrackControls& other) = default;
 
 TrackControls::~TrackControls() {}
@@ skipping 31 matching lines @@
 }
 
 // static
 bool StreamDeviceInfo::IsEqual(const StreamDeviceInfo& first,
                                const StreamDeviceInfo& second) {
   return first.device.IsEqual(second.device) &&
       first.session_id == second.session_id;
 }
 
 }  // namespace content