Remove Clone() from CannedBrowsingData*Helper classes

chrome/browser/browsing_data/browsing_data_indexed_db_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/browsing_data/browsing_data_indexed_db_helper.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/callback.h"
@@ skipping 94 matching lines @@
   return origin < other.origin;
 }
 
 CannedBrowsingDataIndexedDBHelper::CannedBrowsingDataIndexedDBHelper(
     content::IndexedDBContext* context)
     : BrowsingDataIndexedDBHelper(context) {
 }
 
 CannedBrowsingDataIndexedDBHelper::~CannedBrowsingDataIndexedDBHelper() {}
 
-CannedBrowsingDataIndexedDBHelper* CannedBrowsingDataIndexedDBHelper::Clone() {
-  DCHECK_CURRENTLY_ON(BrowserThread::UI);
-  CannedBrowsingDataIndexedDBHelper* clone =
-      new CannedBrowsingDataIndexedDBHelper(indexed_db_context_.get());
-
-  clone->pending_indexed_db_info_ = pending_indexed_db_info_;
-  clone->indexed_db_info_ = indexed_db_info_;
-  return clone;
-}
-
 void CannedBrowsingDataIndexedDBHelper::AddIndexedDB(
     const GURL& origin, const base::string16& name) {
   if (!BrowsingDataHelper::HasWebScheme(origin))
     return;  // Non-websafe state is not considered browsing data.
 
   pending_indexed_db_info_.insert(PendingIndexedDBInfo(origin, name));
 }
 
 void CannedBrowsingDataIndexedDBHelper::Reset() {
   indexed_db_info_.clear();
@@ skipping 36 matching lines @@
   for (std::set<PendingIndexedDBInfo>::iterator it =
            pending_indexed_db_info_.begin();
        it != pending_indexed_db_info_.end(); ) {
     if (it->origin == origin)
       pending_indexed_db_info_.erase(it++);
     else
       ++it;
   }
   BrowsingDataIndexedDBHelper::DeleteIndexedDB(origin);
 }