content: Use base::MessageLoop.

content/browser/geolocation/core_location_data_provider_mac.mm

 // 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.
 
 // This file contains the class definitions for the CoreLocation data provider
 // class and the accompanying Objective C wrapper class. This data provider
 // is used to allow the CoreLocation wrapper to run on the UI thread, since
 // CLLocationManager's start and stop updating methods must be called from a
 // thread with an active NSRunLoop.  Currently only the UI thread appears to
 // fill that requirement.
@@ skipping 174 matching lines @@
   }
 
   return YES;
 }
 
 @end
 
 namespace content {
 
 CoreLocationDataProviderMac::CoreLocationDataProviderMac() {
-  if (MessageLoop::current() !=
+  if (base::MessageLoop::current() !=
       GeolocationProvider::GetInstance()->message_loop()) {
     NOTREACHED() << "CoreLocation data provider must be created on "
         "the Geolocation thread.";
   }
   provider_ = NULL;
   wrapper_.reset([[CoreLocationWrapperMac alloc] initWithDataProvider:this]);
 }
 
 CoreLocationDataProviderMac::~CoreLocationDataProviderMac() {
 }
@@ skipping 34 matching lines @@
   [wrapper_ startLocation];
 }
 
 // Runs in BrowserThread::UI
 void CoreLocationDataProviderMac::StopUpdatingTask() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   [wrapper_ stopLocation];
 }
 
 void CoreLocationDataProviderMac::PositionUpdated(Geoposition position) {
-  DCHECK(MessageLoop::current() ==
+  DCHECK(base::MessageLoop::current() ==
          GeolocationProvider::GetInstance()->message_loop());
   if (provider_)
     provider_->SetPosition(&position);
 }
 
 }  // namespace content