Remove calls to deprecated MessageLoop methods in extensions.

extensions/browser/api/audio/audio_apitest.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 <stddef.h>
 #include <stdint.h>
 
 #include "base/message_loop/message_loop.h"
+#include "base/run_loop.h"
 #include "build/build_config.h"
 #include "extensions/shell/test/shell_apitest.h"
 #if defined(OS_CHROMEOS)
 #include "chromeos/audio/audio_devices_pref_handler_stub.h"
 #include "chromeos/audio/cras_audio_handler.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "chromeos/dbus/fake_cras_audio_client.h"
 #endif
 #include "extensions/test/extension_test_message_listener.h"
 
@@ skipping 80 matching lines @@
   void SetUpCrasAudioHandlerWithTestingNodes(const AudioNodeList& audio_nodes) {
     chromeos::DBusThreadManager* dbus_manager =
         chromeos::DBusThreadManager::Get();
     DCHECK(dbus_manager);
     fake_cras_audio_client_ = static_cast<chromeos::FakeCrasAudioClient*>(
         dbus_manager->GetCrasAudioClient());
     fake_cras_audio_client_->SetAudioNodesAndNotifyObserversForTesting(
         audio_nodes);
     cras_audio_handler_ = chromeos::CrasAudioHandler::Get();
     DCHECK(cras_audio_handler_);
-    message_loop_.RunUntilIdle();
+    base::RunLoop().RunUntilIdle();
   }
 
   void ChangeAudioNodes(const AudioNodeList& audio_nodes) {
     DCHECK(fake_cras_audio_client_);
     fake_cras_audio_client_->SetAudioNodesAndNotifyObserversForTesting(
         audio_nodes);
-    message_loop_.RunUntilIdle();
+    base::RunLoop().RunUntilIdle();
   }
 
  protected:
   base::MessageLoopForUI message_loop_;
   chromeos::CrasAudioHandler* cras_audio_handler_;  // Not owned.
   chromeos::FakeCrasAudioClient* fake_cras_audio_client_;  // Not owned.
 };
 
 IN_PROC_BROWSER_TEST_F(AudioApiTest, Audio) {
   // Set up the audio nodes for testing.
@@ skipping 164 matching lines @@
 
   // Verify the background app got the onNodesChanged event
   // with the last node removed.
   ASSERT_TRUE(result_listener.WaitUntilSatisfied());
   EXPECT_EQ("success", result_listener.message());
 }
 
 #endif  // OS_CHROMEOS
 
 }  // namespace extensions