Implement Worker-MainThread bridge for FileSystem API in Chrome

content/renderer/renderer_webkitplatformsupport_impl.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 "content/renderer/renderer_webkitplatformsupport_impl.h"
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/lazy_instance.h"
 #include "base/memory/shared_memory.h"
@@ skipping 387 matching lines @@
   if (!web_idb_factory_)
     web_idb_factory_.reset(
         new RendererWebIDBFactoryImpl(thread_safe_sender_.get()));
   return web_idb_factory_.get();
 }
 
 //------------------------------------------------------------------------------
 
 WebFileSystem* RendererWebKitPlatformSupportImpl::fileSystem() {
   if (!web_file_system_)
-    web_file_system_.reset(new WebFileSystemImpl());
+    web_file_system_.reset(new WebFileSystemImpl(child_thread_loop_.get()));
   return web_file_system_.get();
 }
 
 //------------------------------------------------------------------------------
 
 WebMimeRegistry::SupportsType
 RendererWebKitPlatformSupportImpl::MimeRegistry::supportsMediaMIMEType(
     const WebString& mime_type,
     const WebString& codecs) {
   return supportsMediaMIMEType(mime_type, codecs, WebString());
@@ skipping 729 matching lines @@
     const WebKit::WebURL& storage_partition,
     WebKit::WebStorageQuotaType type,
     WebKit::WebStorageQuotaCallbacks* callbacks) {
   ChildThread::current()->quota_dispatcher()->QueryStorageUsageAndQuota(
       storage_partition,
       static_cast<quota::StorageType>(type),
       QuotaDispatcher::CreateWebStorageQuotaCallbacksWrapper(callbacks));
 }
 
 }  // namespace content