Media Remoting: Add feature to control enabling Media Remoting.

media/base/media_switches.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 "build/build_config.h"
 #include "media/base/media_switches.h"
 
 namespace switches {
 
 // Allow users to specify a custom buffer size for debugging purpose.
@@ skipping 156 matching lines @@
 // no effect.
 const base::Feature kExternalClearKeyForTesting{
     "external-clear-key-for-testing", base::FEATURE_DISABLED_BY_DEFAULT};
 
 #if defined(OS_ANDROID)
 // Replaces WPMA by the MediaPlayerRenderer for HLS and fallback playback.
 const base::Feature kAndroidMediaPlayerRenderer{
     "android-media-player-renderer", base::FEATURE_DISABLED_BY_DEFAULT};
 #endif
 
+#if BUILDFLAG(ENABLE_MEDIA_REMOTING)
+// Enables to renderer and play back media on remote devices when the tab is
+// being mirrored and other conditions are met.
+const base::Feature kMediaRemoting{"media-remoting",
+                                   base::FEATURE_ENABLED_BY_DEFAULT};

[xhwang, 2016/11/02 05:18:39]

Can we disable it by default for now and only enable it after we have it work
end-to-end and done some proper testing?

[xjz, 2016/11/02 17:48:05]

+miu

WDYT?

+#endif
+
 }  // namespace media