Remove Clone() from CannedBrowsingData*Helper classes

chrome/browser/browsing_data/browsing_data_service_worker_helper.cc

 // Copyright 2014 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/browsing_data/browsing_data_service_worker_helper.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/callback.h"
@@ skipping 104 matching lines @@
 
 CannedBrowsingDataServiceWorkerHelper::CannedBrowsingDataServiceWorkerHelper(
     content::ServiceWorkerContext* context)
     : BrowsingDataServiceWorkerHelper(context) {
 }
 
 CannedBrowsingDataServiceWorkerHelper::
     ~CannedBrowsingDataServiceWorkerHelper() {
 }
 
-CannedBrowsingDataServiceWorkerHelper*
-CannedBrowsingDataServiceWorkerHelper::Clone() {
-  DCHECK_CURRENTLY_ON(BrowserThread::UI);
-  CannedBrowsingDataServiceWorkerHelper* clone =
-      new CannedBrowsingDataServiceWorkerHelper(service_worker_context_);
-
-  clone->pending_service_worker_info_ = pending_service_worker_info_;
-  clone->service_worker_info_ = service_worker_info_;
-  return clone;
-}
-
 void CannedBrowsingDataServiceWorkerHelper::AddServiceWorker(
     const GURL& origin, const std::vector<GURL>& scopes) {
   if (!BrowsingDataHelper::HasWebScheme(origin))
     return;  // Non-websafe state is not considered browsing data.
 
   pending_service_worker_info_.insert(
       PendingServiceWorkerUsageInfo(origin, scopes));
 }
 
 void CannedBrowsingDataServiceWorkerHelper::Reset() {
@@ skipping 39 matching lines @@
   for (std::set<PendingServiceWorkerUsageInfo>::iterator it =
            pending_service_worker_info_.begin();
        it != pending_service_worker_info_.end();) {
     if (it->origin == origin)
       pending_service_worker_info_.erase(it++);
     else
       ++it;
   }
   BrowsingDataServiceWorkerHelper::DeleteServiceWorkers(origin);
 }