fix canplaythrough

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"
 #include "ppapi/features/features.h"
 
 namespace switches {
 
@@ skipping 172 matching lines @@
 };
 
 // Let video track be unselected when video is playing in the background.
 const base::Feature kBackgroundVideoTrackOptimization{
     "BackgroundVideoTrackOptimization", base::FEATURE_DISABLED_BY_DEFAULT};
 
 // Let video without audio be paused when it is playing in the background.
 const base::Feature kBackgroundVideoPauseOptimization{
     "BackgroundVideoPauseOptimization", base::FEATURE_DISABLED_BY_DEFAULT};
 
+// CanPlayThrough issued according to standard.
+const base::Feature kCanPlayThrough{
+    "CanPlayThrough", base::FEATURE_DISABLED_BY_DEFAULT};
+
 // Make MSE garbage collection algorithm more aggressive when we are under
 // moderate or critical memory pressure. This will relieve memory pressure by
 // releasing stale data from MSE buffers.
 const base::Feature kMemoryPressureBasedSourceBufferGC{
     "MemoryPressureBasedSourceBufferGC", base::FEATURE_DISABLED_BY_DEFAULT};
 
 // Use the new Remote Playback / media flinging pipeline.
 const base::Feature kNewRemotePlaybackPipeline{
     "NewRemotePlaybackPipeline", base::FEATURE_DISABLED_BY_DEFAULT};
 
@@ skipping 37 matching lines @@
 // This is completely insecure - DO NOT USE except for testing.
 const base::Feature kD3D11VideoDecoding{"D3D11VideoDecoding",
                                         base::FEATURE_DISABLED_BY_DEFAULT};
 
 // Enables H264 HW encode acceleration using Media Foundation for Windows.
 const base::Feature kMediaFoundationH264Encoding{
     "MediaFoundationH264Encoding", base::FEATURE_ENABLED_BY_DEFAULT};
 #endif  // defined(OS_WIN)
 
 }  // namespace media