Change WebRTCInternals::GetInstance() to use a leaky LazyInstance.

content/browser/media/webrtc_internals.h

 // 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.
 
 #ifndef CONTENT_BROWSER_MEDIA_WEBRTC_INTERNALS_H_
 #define CONTENT_BROWSER_MEDIA_WEBRTC_INTERNALS_H_
 
 #include "base/gtest_prod_util.h"
+#include "base/lazy_instance.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/memory/singleton.h"
 #include "base/observer_list.h"
 #include "base/process/process.h"
 #include "base/values.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "ui/shell_dialogs/select_file_dialog.h"
 
 namespace content {
 
@@ skipping 74 matching lines @@
     return aec_dump_enabled_;
   }
 
   base::FilePath aec_dump_file_path() {
     return aec_dump_file_path_;
   }
 
   void ResetForTesting();
 
  private:
-  friend struct DefaultSingletonTraits<WebRTCInternals>;
+  friend struct base::DefaultLazyInstanceTraits<WebRTCInternals>;
   FRIEND_TEST_ALL_PREFIXES(WebRtcAecDumpBrowserTest, CallWithAecDump);
   FRIEND_TEST_ALL_PREFIXES(WebRtcAecDumpBrowserTest,
                            CallWithAecDumpEnabledThenDisabled);
   FRIEND_TEST_ALL_PREFIXES(WebRtcAecDumpBrowserTest, TwoCallsWithAecDump);
   FRIEND_TEST_ALL_PREFIXES(WebRTCInternalsTest,
                            AecRecordingFileSelectionCanceled);
 
   WebRTCInternals();
   virtual ~WebRTCInternals();
 
@@ skipping 61 matching lines @@
 
   // While |peer_connection_data_| is non-empty, hold an instance of
   // PowerSaveBlocker.  This prevents the application from being suspended while
   // remoting.
   scoped_ptr<PowerSaveBlocker> power_save_blocker_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_MEDIA_WEBRTC_INTERNALS_H_