Make Platform::queryStorageUsageAndQuota work from worker threads

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"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/metrics/histogram.h"
 #include "base/platform_file.h"
 #include "base/safe_numerics.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/child/database_util.h"
 #include "content/child/fileapi/webfilesystem_impl.h"
 #include "content/child/indexed_db/proxy_webidbfactory_impl.h"
 #include "content/child/npapi/npobject_util.h"
 #include "content/child/quota_dispatcher.h"
+#include "content/child/quota_message_filter.h"
 #include "content/child/thread_safe_sender.h"
 #include "content/child/webblobregistry_impl.h"
 #include "content/child/webmessageportchannel_impl.h"
 #include "content/common/file_utilities_messages.h"
 #include "content/common/gpu/client/context_provider_command_buffer.h"
 #include "content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h"
 #include "content/common/mime_registry_messages.h"
 #include "content/common/view_messages.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/webplugininfo.h"
@@ skipping 209 matching lines @@
     sandbox_support_.reset(
         new RendererWebKitPlatformSupportImpl::SandboxSupport);
   } else {
     DVLOG(1) << "Disabling sandbox support for testing.";
   }
 
   // ChildThread may not exist in some tests.
   if (ChildThread::current()) {
     sync_message_filter_ = ChildThread::current()->sync_message_filter();
     thread_safe_sender_ = ChildThread::current()->thread_safe_sender();
+    quota_message_filter_ = ChildThread::current()->quota_message_filter();
   }
 }
 
 RendererWebKitPlatformSupportImpl::~RendererWebKitPlatformSupportImpl() {
 }
 
 //------------------------------------------------------------------------------
 
 WebKit::WebClipboard* RendererWebKitPlatformSupportImpl::clipboard() {
   WebKit::WebClipboard* clipboard =
@@ skipping 894 matching lines @@
   RenderThread::Get()->Send(new ViewHostMsg_CancelVibration());
 }
 #endif  // defined(OS_ANDROID)
 
 //------------------------------------------------------------------------------
 
 void RendererWebKitPlatformSupportImpl::queryStorageUsageAndQuota(
     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));
+  if (!thread_safe_sender_.get() || !quota_message_filter_.get())
+    return;
+  QuotaDispatcher::ThreadSpecificInstance(
+      thread_safe_sender_.get(),
+      quota_message_filter_.get())->QueryStorageUsageAndQuota(
+          storage_partition,
+          static_cast<quota::StorageType>(type),
+          QuotaDispatcher::CreateWebStorageQuotaCallbacksWrapper(callbacks));
 }
 
 }  // namespace content