Implement WebPermissionClient for Document and Worker contexts

content/child/permissions/permission_manager_thread_proxy.h

+// 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.
+
+#ifndef CONTENT_CHILD_PERMISSIONS_PERMISSION_MANAGER_THREAD_PROXY_H_
+#define CONTENT_CHILD_PERMISSIONS_PERMISSION_MANAGER_THREAD_PROXY_H_
+
+#include "base/compiler_specific.h"
+#include "base/id_map.h"
+#include "base/macros.h"
+#include "base/memory/ref_counted.h"
+#include "content/child/worker_task_runner.h"
+#include "third_party/WebKit/public/platform/modules/permissions/WebPermissionClient.h"
+
+namespace base {
+class SingleThreadTaskRunner;
+}
+
+namespace content {
+
+class PermissionManager;
+
+class PermissionManagerThreadProxy :
+    public blink::WebPermissionClient,
+    public WorkerTaskRunner::Observer {
+ public:
+  static PermissionManagerThreadProxy* GetThreadInstance(
+      base::SingleThreadTaskRunner* main_thread_task_runner,
+      PermissionManager* permissions_manager);
+
+  // blink::WebPermissionClient implementation.
+  virtual void queryPermission(blink::WebPermissionType type,
+                               const blink::WebURL& origin,
+                               blink::WebPermissionQueryCallback* callback);
+
+  // WorkerTaskRunner::Observer implementation.
+  void OnWorkerRunLoopStopped() override;
+
+ private:
+  PermissionManagerThreadProxy(
+      base::SingleThreadTaskRunner* main_thread_task_runner,
+      PermissionManager* permissions_manager);
+
+  virtual ~PermissionManagerThreadProxy();
+
+  scoped_refptr<base::SingleThreadTaskRunner> main_thread_task_runner_;
+  PermissionManager* permissions_manager_;
+
+  DISALLOW_COPY_AND_ASSIGN(PermissionManagerThreadProxy);
+};
+
+}  // namespace content
+
+#endif // CONTENT_CHILD_PERMISSIONS_PERMISSIONS_MANAGER_THREAD_PROXY_H_