Move underflow threshold limits out of the video renderer.

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 "media/base/media_switches.h"
 
 namespace switches {
 
 // Allow users to specify a custom buffer size for debugging purpose.
 const char kAudioBufferSize[] = "audio-buffer-size";
@@ skipping 92 matching lines @@
 const char kUseFileForFakeAudioCapture[] = "use-file-for-fake-audio-capture";
 
 // Enables support for inband text tracks in media content.
 const char kEnableInbandTextTracks[] = "enable-inband-text-tracks";
 
 // When running tests on a system without the required hardware or libraries,
 // this flag will cause the tests to fail. Otherwise, they silently succeed.
 const char kRequireAudioHardwareForTesting[] =
     "require-audio-hardware-for-testing";
 
+// Allows clients to override the threshold for when the media renderer will
+// declare the underflow state for the video stream when audio is present.
+// TODO(dalecurtis): Remove once experiments for http://crbug.com/470940 finish.
+const char kVideoUnderflowThresholdMs[] = "video-underflow-threshold-ms";
+
 }  // namespace switches