Extension Settings API: throttle the API in the same way that the Bookmarks API

chrome/browser/extensions/extension_webrequest_api.cc

 // Copyright (c) 2011 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/extension_webrequest_api.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/json/json_writer.h"
@@ skipping 1584 matching lines @@
   return true;
 }
 
 bool WebRequestHandlerBehaviorChanged::RunImpl() {
   BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
                           base::Bind(&ClearCacheOnNavigationOnUI));
   return true;
 }
 
 void WebRequestHandlerBehaviorChanged::GetQuotaLimitHeuristics(
-    std::list<QuotaLimitHeuristic*>* heuristics) const {
+    QuotaLimitHeuristics* heuristics) const {
   QuotaLimitHeuristic::Config config = {
     20,                               // Refill 20 tokens per interval.
     base::TimeDelta::FromMinutes(10)  // 10 minutes refill interval.
   };
   QuotaLimitHeuristic::BucketMapper* bucket_mapper =
       new QuotaLimitHeuristic::SingletonBucketMapper();
   ClearCacheQuotaHeuristic* heuristic =
       new ClearCacheQuotaHeuristic(config, bucket_mapper);
   heuristics->push_back(heuristic);
 }
@@ skipping 32 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));
 }