Send Allow{Database,FileSystem,IndexedDB} sync IPCs directly from worker thread

chrome/renderer/worker_permission_client_proxy.h

+// Copyright 2013 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.
+
+#ifndef CHROME_RENDERER_WORKER_PERMISSION_CLIENT_PROXY_H_
+#define CHROME_RENDERER_WORKER_PERMISSION_CLIENT_PROXY_H_
+
+#include "base/basictypes.h"
+#include "base/memory/ref_counted.h"
+#include "third_party/WebKit/public/web/WebWorkerPermissionClientProxy.h"
+#include "url/gurl.h"
+
+namespace IPC {
+class SyncMessageFilter;
+}
+
+namespace content {
+class RenderView;
+}
+
+namespace WebKit {
+class WebFrame;
+}
+
+// This proxy is created on the main renderer thread then passed onto
+// the blink's worker thread.
+class WorkerPermissionClientProxy
+    : public WebKit::WebWorkerPermissionClientProxy {
+ public:
+  WorkerPermissionClientProxy(content::RenderView* render_view,
+                              WebKit::WebFrame* frame);
+  virtual ~WorkerPermissionClientProxy();
+
+  // WebWorkerPermissionClientProxy overrides.
+  virtual bool allowDatabase(const WebKit::WebString& name,
+                             const WebKit::WebString& display_name,
+                             unsigned long estimated_size);
+  virtual bool allowFileSystem();
+  virtual bool allowIndexedDB(const WebKit::WebString& name);
+
+ private:
+  // Loading document context for this worker.
+  const int routing_id_;
+  bool is_unique_origin_;
+  GURL document_origin_url_;
+  GURL top_frame_origin_url_;
+  scoped_refptr<IPC::SyncMessageFilter> sync_message_filter_;
+
+  DISALLOW_COPY_AND_ASSIGN(WorkerPermissionClientProxy);
+};
+
+#endif  // CHROME_RENDERER_WORKER_PERMISSION_CLIENT_PROXY_H_