[Sync] Componentize synced_tab_delegate

chrome/browser/sync/test/integration/sessions_helper.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 "chrome/browser/sync/test/integration/sessions_helper.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 121 matching lines @@
 
 class TabEventHandler : public browser_sync::LocalSessionEventHandler {
  public:
   TabEventHandler() : weak_factory_(this) {
     base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
         FROM_HERE,
         base::Bind(&TabEventHandler::QuitLoop, weak_factory_.GetWeakPtr()),
         TestTimeouts::action_max_timeout());
   }
 
-  void OnLocalTabModified(
+  bool OnLocalTabModified(
       browser_sync::SyncedTabDelegate* modified_tab) override {
     // Unwind to ensure SessionsSyncManager has processed the event.
     base::ThreadTaskRunnerHandle::Get()->PostTask(
         FROM_HERE,
         base::Bind(&TabEventHandler::QuitLoop, weak_factory_.GetWeakPtr()));
+    return true;
   }
 
   void OnFaviconsChanged(const std::set<GURL>& /* page_urls */,
                          const GURL& /* icon_url */) override {
     // Unwind to ensure SessionsSyncManager has processed the event.
     base::ThreadTaskRunnerHandle::Get()->PostTask(
         FROM_HERE,
         base::Bind(&TabEventHandler::QuitLoop, weak_factory_.GetWeakPtr()));
   }
 
@@ skipping 268 matching lines @@
   return !checker.TimedOut();
 }
 
 void DeleteForeignSession(int index, std::string session_tag) {
   ProfileSyncServiceFactory::GetInstance()->GetForProfile(
       test()->GetProfile(index))->
           GetOpenTabsUIDelegate()->DeleteForeignSession(session_tag);
 }
 
 }  // namespace sessions_helper