Drive extension functions from ExtensionFunction::Run. The

chrome/browser/extensions/api/web_request/web_request_api.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/extensions/api/web_request/web_request_api.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 2399 matching lines @@
   ExtensionWarningSet warnings;
   warnings.insert(
       ExtensionWarning::CreateRepeatedCacheFlushesWarning(extension_id()));
   BrowserThread::PostTask(
       BrowserThread::UI,
       FROM_HERE,
       base::Bind(&ExtensionWarningService::NotifyWarningsOnUI,
                  profile_id(), warnings));
 
   // Continue gracefully.
-  Run();
+  RunSync();
 }
 
 bool WebRequestHandlerBehaviorChangedFunction::RunSync() {
   helpers::ClearCacheOnNavigation();
   return true;
 }
 
 void SendExtensionWebRequestStatusToHost(content::RenderProcessHost* host) {
   Profile* profile = Profile::FromBrowserContext(host->GetBrowserContext());
   if (!profile)
@@ skipping 14 matching lines @@
       } else if ((*it)->name().find("AdBlock") != std::string::npos) {
         adblock = true;
       } else {
         other = true;
       }
     }
   }
 
   host->Send(new ExtensionMsg_UsingWebRequestAPI(adblock, adblock_plus, other));
 }