Write out CacheStorageCache size to index file.

content/browser/cache_storage/cache_storage_dispatcher_host.cc

 // Copyright 2015 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 "content/browser/cache_storage/cache_storage_dispatcher_host.h"
 
 #include <stddef.h>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 371 matching lines @@
     Send(new CacheStorageMsg_CacheStorageDeleteError(
         thread_id, request_id, ToWebServiceWorkerCacheError(error)));
     return;
   }
   Send(new CacheStorageMsg_CacheStorageDeleteSuccess(thread_id, request_id));
 }
 
 void CacheStorageDispatcherHost::OnCacheStorageKeysCallback(
     int thread_id,
     int request_id,
-    const std::vector<std::string>& strings) {
+    const CacheStorageIndex& cache_index) {
   std::vector<base::string16> string16s;
-  for (size_t i = 0, max = strings.size(); i < max; ++i)
-    string16s.push_back(base::UTF8ToUTF16(strings[i]));
+  for (const auto& metadata : cache_index.ordered_cache_metadata())
+    string16s.push_back(base::UTF8ToUTF16(metadata.name));
   Send(new CacheStorageMsg_CacheStorageKeysSuccess(thread_id, request_id,
                                                    string16s));
 }
 
 void CacheStorageDispatcherHost::OnCacheStorageMatchCallback(
     int thread_id,
     int request_id,
     CacheStorageError error,
     std::unique_ptr<ServiceWorkerResponse> response,
     std::unique_ptr<storage::BlobDataHandle> blob_data_handle) {
@@ skipping 125 matching lines @@
   UUIDToBlobDataHandleList::iterator it = blob_handle_store_.find(uuid);
   if (it == blob_handle_store_.end())
     return;
   DCHECK(!it->second.empty());
   it->second.pop_front();
   if (it->second.empty())
     blob_handle_store_.erase(it);
 }
 
 }  // namespace content