Use base::MessageLoop in more files.

chrome/browser/policy/policy_browsertest.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 <algorithm>
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 2155 matching lines @@
     content::BrowserThread::PostTaskAndReply(
         content::BrowserThread::IO, FROM_HERE,
         base::Bind(
             &MediaCaptureDevicesDispatcher::OnAudioCaptureDevicesChanged,
             base::Unretained(MediaCaptureDevicesDispatcher::GetInstance()),
             audio_devices),
         base::Bind(
             &MediaStreamDevicesControllerBrowserTest::FinishAudioTest,
             this));
 
-    MessageLoop::current()->Run();
+    base::MessageLoop::current()->Run();
   }
 }
 
 IN_PROC_BROWSER_TEST_P(MediaStreamDevicesControllerBrowserTest,
                        VideoCaptureAllowed) {
   content::MediaStreamDevices video_devices;
   content::MediaStreamDevice fake_video_device(
       content::MEDIA_DEVICE_VIDEO_CAPTURE, "fake_dev", "Fake Video Device");
   video_devices.push_back(fake_video_device);
 
@@ skipping 36 matching lines @@
     content::BrowserThread::PostTaskAndReply(
         content::BrowserThread::IO, FROM_HERE,
         base::Bind(
             &MediaCaptureDevicesDispatcher::OnVideoCaptureDevicesChanged,
             base::Unretained(MediaCaptureDevicesDispatcher::GetInstance()),
             video_devices),
         base::Bind(
             &MediaStreamDevicesControllerBrowserTest::FinishVideoTest,
             this));
 
-    MessageLoop::current()->Run();
+    base::MessageLoop::current()->Run();
   }
 }
 
 INSTANTIATE_TEST_CASE_P(MediaStreamDevicesControllerBrowserTestInstance,
                         MediaStreamDevicesControllerBrowserTest,
                         testing::Bool());
 
 #if !defined(OS_CHROMEOS)
 // Similar to PolicyTest but sets the proper policy before the browser is
 // started.
@@ skipping 20 matching lines @@
       chrome_variations::VariationsService::GetVariationsServerURL(
           g_browser_process->local_state());
   EXPECT_TRUE(StartsWithASCII(url.spec(), default_variations_url, true));
   std::string value;
   EXPECT_TRUE(net::GetValueForKeyInQuery(url, "restrict", &value));
   EXPECT_EQ("restricted", value);
 }
 #endif
 
 }  // namespace policy