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

content/browser/media/session/media_session_controllers_manager.cc

 // Copyright 2016 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/browser/media/session/media_session_controllers_manager.h"
 
 #include "base/command_line.h"
 #include "content/browser/media/session/media_session_controller.h"
 #include "media/base/media_switches.h"
 
 namespace content {
 
 namespace {
 
 bool IsDefaultMediaSessionEnabled() {
 #if defined(OS_ANDROID)
   return true;
 #else
   return base::CommandLine::ForCurrentProcess()->HasSwitch(
-      switches::kEnableDefaultMediaSession);
+      switches::kEnableAudioFocus);
 #endif
 }
 
 }  // anonymous namespace
 
 MediaSessionControllersManager::MediaSessionControllersManager(
     MediaWebContentsObserver* media_web_contents_observer)
     : media_web_contents_observer_(media_web_contents_observer) {
 }
 
@@ skipping 55 matching lines @@
   it->second->OnPlaybackPaused();
 }
 
 void MediaSessionControllersManager::OnEnd(const MediaPlayerId& id) {
   if (!IsDefaultMediaSessionEnabled())
     return;
   controllers_map_.erase(id);
 }
 
 }  // namespace content