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

chrome/browser/chromeos/accessibility/accessibility_manager.cc

 // Copyright (c) 2013 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 "chrome/browser/chromeos/accessibility/accessibility_manager.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
@@ skipping 1453 matching lines @@
 
   if (!chromevox_panel_) {
     chromevox_panel_ = new ChromeVoxPanel(
         profile_,
         session_manager::SessionManager::Get()->IsUserSessionBlocked());
     chromevox_panel_widget_observer_.reset(
         new ChromeVoxPanelWidgetObserver(chromevox_panel_->GetWidget(), this));
   }
 
   if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kEnableDefaultMediaSession)) {
+          switches::kEnableAudioFocus)) {
     base::CommandLine::ForCurrentProcess()->AppendSwitch(
-        switches::kEnableDefaultMediaSession);
+        switches::kEnableAudioFocus);
   }
 }
 
 void AccessibilityManager::PostUnloadChromeVox() {
   // Do any teardown work needed immediately after ChromeVox actually unloads.
   PlayEarcon(SOUND_SPOKEN_FEEDBACK_DISABLED, PlaySoundOption::ALWAYS);
   // Clear the accessibility focus ring.
   AccessibilityFocusRingController::GetInstance()->SetFocusRing(
       std::vector<gfx::Rect>(),
       AccessibilityFocusRingController::PERSIST_FOCUS_RING);
@@ skipping 49 matching lines @@
     content::BrowserContext* context) {
   keyboard_listener_extension_id_ = id;
 
   extensions::ExtensionRegistry* registry =
       extensions::ExtensionRegistry::Get(context);
   if (!extension_registry_observer_.IsObserving(registry) && !id.empty())
     extension_registry_observer_.Add(registry);
 }
 
 }  // namespace chromeos