Rename --enable-default-media-session to --enable-audio-focus.

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 50 matching lines @@
 // Number of buffers to use for WaveOut.
 const char kWaveOutBuffers[] = "waveout-buffers";
 #endif
 
 #if defined(USE_CRAS)
 // Use CRAS, the ChromeOS audio server.
 const char kUseCras[] = "use-cras";
 #endif
 
 #if !defined(OS_ANDROID) || BUILDFLAG(ENABLE_PLUGINS)
-// Use a media session for each tabs in a way that two tabs can't play on top of
-// each other. This is different from the Media Session API as it is enabling a
-// default behaviour for the browser. The allowed values are: "" (empty),
-// |kEnableDefaultMediaSessionDuckFlash|.
-const char kEnableDefaultMediaSession[] = "enable-default-media-session";
+// Enable a internal audio focus management between tabs in such a way that two
+// tabs can't  play on top of each other.
+// The allowed values are: "" (empty) or |kEnableAudioFocusDuckFlash|.
+const char kEnableAudioFocus[] = "enable-audio-focus";
 #endif  // !defined(OS_ANDROID) || BUILDFLAG(ENABLE_PLUGINS)
 
 #if BUILDFLAG(ENABLE_PLUGINS)
-// This value is used as an option for |kEnableDefaultMediaSession|. Flash will
+// This value is used as an option for |kEnableAudioFocus|. Flash will
 // be ducked when losing audio focus.
-const char kEnableDefaultMediaSessionDuckFlash[] = "duck-flash";
+const char kEnableAudioFocusDuckFlash[] = "duck-flash";
 #endif  // BUILDFLAG(ENABLE_PLUGINS)
 
 #if BUILDFLAG(ENABLE_RUNTIME_MEDIA_RENDERER_SELECTION)
 // Rather than use the renderer hosted remotely in the media service, fall back
 // to the default renderer within content_renderer. Does not change the behavior
 // of the media service.
 const char kDisableMojoRenderer[] = "disable-mojo-renderer";
 #endif  // BUILDFLAG(ENABLE_RUNTIME_MEDIA_RENDERER_SELECTION)
 
 // Use fake device for Media Stream to replace actual camera and microphone.
@@ skipping 152 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