[Sync] Fix namespaces for the browser_sync component.

ios/chrome/browser/sync/ios_chrome_sync_client.mm

 // Copyright 2015 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 "ios/chrome/browser/sync/ios_chrome_sync_client.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 140 matching lines @@
   // Component factory may already be set in tests.
   if (!GetSyncApiComponentFactory()) {
     const GURL sync_service_url = GetSyncServiceURL(
         *base::CommandLine::ForCurrentProcess(), ::GetChannel());
     ProfileOAuth2TokenService* token_service =
         OAuth2TokenServiceFactory::GetForBrowserState(browser_state_);
 
     net::URLRequestContextGetter* url_request_context_getter =
         browser_state_->GetRequestContext();
 
-    component_factory_.reset(new ProfileSyncComponentsFactoryImpl(
+    component_factory_.reset(new browser_sync::ProfileSyncComponentsFactoryImpl(
         this, ::GetChannel(), ::GetVersionString(),
         ui::GetDeviceFormFactor() == ui::DEVICE_FORM_FACTOR_TABLET,
         *base::CommandLine::ForCurrentProcess(),
         prefs::kSavingBrowserHistoryDisabled, sync_service_url,
         web::WebThread::GetTaskRunnerForThread(web::WebThread::UI),
         web::WebThread::GetTaskRunnerForThread(web::WebThread::DB),
         token_service, url_request_context_getter, web_data_service_,
         password_store_));
   }
 }
@@ skipping 218 matching lines @@
 
 // static
 void IOSChromeSyncClient::GetDeviceInfoTrackers(
     std::vector<const sync_driver::DeviceInfoTracker*>* trackers) {
   DCHECK(trackers);
   std::vector<ios::ChromeBrowserState*> browser_state_list =
       GetApplicationContext()
           ->GetChromeBrowserStateManager()
           ->GetLoadedBrowserStates();
   for (ios::ChromeBrowserState* browser_state : browser_state_list) {
-    ProfileSyncService* profile_sync_service =
+    browser_sync::ProfileSyncService* profile_sync_service =
         IOSChromeProfileSyncServiceFactory::GetForBrowserState(browser_state);
     if (profile_sync_service != nullptr) {
       const sync_driver::DeviceInfoTracker* tracker =
           profile_sync_service->GetDeviceInfoTracker();
       if (tracker != nullptr) {
         trackers->push_back(tracker);
       }
     }
   }
 }