[Offline Pages] Add cached offline page utils and show usage in settings.

chrome/browser/ui/webui/settings/chromeos/device_storage_handler.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/ui/webui/settings/chromeos/device_storage_handler.h"
 
 #include <algorithm>
 #include <numeric>
 #include <string>
 
@@ skipping 242 matching lines @@
             storage_partition->GetServiceWorkerContext()),
         new BrowsingDataCacheStorageHelper(
             storage_partition->GetCacheStorageContext()),
         BrowsingDataFlashLSOHelper::Create(profile)));
   }
   site_data_size_collector_->Fetch(
       base::Bind(&StorageHandler::OnGetBrowsingDataSize,
                  base::Unretained(this), true));
 }
 
-void StorageHandler::OnGetCacheSize(int64_t size, bool is_upper_limit) {
+void StorageHandler::OnGetCacheSize(bool is_upper_limit, int64_t size) {
   DCHECK(!is_upper_limit);
   OnGetBrowsingDataSize(false, size);
 }
 
 void StorageHandler::OnGetBrowsingDataSize(bool is_site_data, int64_t size) {
   if (is_site_data) {
     has_browser_site_data_size_ = true;
     browser_site_data_size_ = size;
   } else {
     has_browser_cache_size_ = true;
@@ skipping 100 matching lines @@
                          base::Value("storage-android-size-changed"),
                          base::Value(size_string));
 }
 
 void StorageHandler::OnClearDriveCacheDone(bool success) {
   UpdateDriveCacheSize();
 }
 
 }  // namespace settings
 }  // namespace chromeos