Remove all remaining traces of MessageLoopProxy.

content/browser/cache_storage/cache_storage_cache.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 "content/browser/cache_storage/cache_storage_cache.h"
 
 #include <stddef.h>
 #include <string>
 #include <utility>
 
@@ skipping 1396 matching lines @@
   net::CompletionCallback create_cache_callback =
       base::Bind(&CacheStorageCache::CreateBackendDidCreate,
                  weak_ptr_factory_.GetWeakPtr(), callback,
                  base::Passed(std::move(backend_ptr)));
 
   // TODO(jkarlin): Use the cache task runner that ServiceWorkerCacheCore
   // has for disk caches.
   int rv = disk_cache::CreateCacheBackend(
       cache_type, net::CACHE_BACKEND_SIMPLE, path_, kMaxCacheBytes,
       false, /* force */
-      BrowserThread::GetMessageLoopProxyForThread(BrowserThread::CACHE).get(),
-      NULL, backend, create_cache_callback);
+      BrowserThread::GetTaskRunnerForThread(BrowserThread::CACHE).get(), NULL,
+      backend, create_cache_callback);
   if (rv != net::ERR_IO_PENDING)
     create_cache_callback.Run(rv);
 }
 
 void CacheStorageCache::CreateBackendDidCreate(
     const CacheStorageCache::ErrorCallback& callback,
     std::unique_ptr<ScopedBackendPtr> backend_ptr,
     int rv) {
   if (rv != net::OK) {
     callback.Run(CACHE_STORAGE_ERROR_STORAGE);
@@ skipping 149 matching lines @@
       temp_entry, INDEX_RESPONSE_BODY, INDEX_SIDE_DATA);
   return blob_storage_context_->AddFinishedBlob(&blob_data);
 }
 
 std::unique_ptr<CacheStorageCacheHandle>
 CacheStorageCache::CreateCacheHandle() {
   return cache_storage_->CreateCacheHandle(this);
 }
 
 }  // namespace content