Move Singleton and related structs to namespace base

chrome/browser/devtools/device/devtools_android_bridge.cc

 // Copyright 2014 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/devtools/device/devtools_android_bridge.h"
 
 #include <map>
 #include <set>
 #include <vector>
 
@@ skipping 239 matching lines @@
 
 ProtocolCommand::~ProtocolCommand() {
   if (!callback_.is_null())
     callback_.Run();
 }
 
 }  // namespace
 
 // static
 DevToolsAndroidBridge::Factory* DevToolsAndroidBridge::Factory::GetInstance() {
-  return Singleton<DevToolsAndroidBridge::Factory>::get();
+  return base::Singleton<DevToolsAndroidBridge::Factory>::get();
 }
 
 // static
 DevToolsAndroidBridge* DevToolsAndroidBridge::Factory::GetForProfile(
     Profile* profile) {
   return static_cast<DevToolsAndroidBridge*>(GetInstance()->
           GetServiceForBrowserContext(profile, true));
 }
 
 DevToolsAndroidBridge::Factory::Factory()
@@ skipping 689 matching lines @@
     device_providers.push_back(
         new WebRTCDeviceProvider(profile_, signin_manager_, token_service_));
   }
 
   device_manager_->SetDeviceProviders(device_providers);
   if (NeedsDeviceListPolling()) {
     StopDeviceListPolling();
     StartDeviceListPolling();
   }
 }