[Sync] Fix namespaces for the browser_sync component.

chrome/browser/extensions/api/sessions/sessions_api.cc

 // Copyright 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 "chrome/browser/extensions/api/sessions/sessions_api.h"
 
 #include <stddef.h>
 
 #include <utility>
 #include <vector>
@@ skipping 331 matching lines @@
        ++it) {
     std::unique_ptr<api::sessions::Session> session_model(
         CreateSessionModel(*it->second, session->session_tag));
     if (session_model)
       device_struct.sessions.push_back(std::move(*session_model));
   }
   return device_struct;
 }
 
 bool SessionsGetDevicesFunction::RunSync() {
-  ProfileSyncService* service =
+  browser_sync::ProfileSyncService* service =
       ProfileSyncServiceFactory::GetInstance()->GetForProfile(GetProfile());
   if (!(service && service->GetPreferredDataTypes().Has(syncer::SESSIONS))) {
     // Sync not enabled.
     results_ =
         GetDevices::Results::Create(std::vector<api::sessions::Device>());
     return true;
   }
 
   sync_sessions::OpenTabsUIDelegate* open_tabs =
       service->GetOpenTabsUIDelegate();
@@ skipping 126 matching lines @@
     return SetResultRestoredWindow(
         ExtensionTabUtil::GetWindowIdOfTab(first_tab->web_contents()));
   }
 
   SetResultRestoredTab(first_tab->web_contents());
   return true;
 }
 
 bool SessionsRestoreFunction::RestoreForeignSession(const SessionId& session_id,
                                                     Browser* browser) {
-  ProfileSyncService* service =
+  browser_sync::ProfileSyncService* service =
       ProfileSyncServiceFactory::GetInstance()->GetForProfile(GetProfile());
   if (!(service && service->GetPreferredDataTypes().Has(syncer::SESSIONS))) {
     SetError(kSessionSyncError);
     return false;
   }
   sync_sessions::OpenTabsUIDelegate* open_tabs =
       service->GetOpenTabsUIDelegate();
   if (!open_tabs) {
     SetError(kSessionSyncError);
     return false;
@@ skipping 118 matching lines @@
   return g_factory.Pointer();
 }
 
 void SessionsAPI::OnListenerAdded(const EventListenerInfo& details) {
   sessions_event_router_.reset(
       new SessionsEventRouter(Profile::FromBrowserContext(browser_context_)));
   EventRouter::Get(browser_context_)->UnregisterObserver(this);
 }
 
 }  // namespace extensions