Fix incorrectly reported UMA OfflinePages.AggregatedRequestResult

chrome/browser/android/offline_pages/offline_page_request_job.cc

 // Copyright 2016 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/android/offline_pages/offline_page_request_job.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/files/file_path.h"
@@ skipping 416 matching lines @@
 
   SelectPageForOnlineURL(online_url, offline_header, network_state,
                          web_contents_getter, tab_id_getter, job);
 }
 
 }  // namespace
 
 // static
 void OfflinePageRequestJob::ReportAggregatedRequestResult(
     AggregatedRequestResult result) {
-  UMA_HISTOGRAM_ENUMERATION("OfflinePages.AggregatedRequestResult",
+  UMA_HISTOGRAM_ENUMERATION("OfflinePages.AggregatedRequestResult2",
       static_cast<int>(result),
       static_cast<int>(AggregatedRequestResult::AGGREGATED_REQUEST_RESULT_MAX));
 }
 
 // static
 OfflinePageRequestJob* OfflinePageRequestJob::Create(
     net::URLRequest* request,
     net::NetworkDelegate* network_delegate,
     previews::PreviewsDecider* previews_decider) {
   const content::ResourceRequestInfo* resource_request_info =
@@ skipping 107 matching lines @@
   file_path_ = offline_file_path;
   URLRequestFileJob::Start();
 }
 
 void OfflinePageRequestJob::SetDelegateForTesting(
     std::unique_ptr<Delegate> delegate) {
   delegate_ = std::move(delegate);
 }
 
 }  // namespace offline_pages