Implement pointer lock API for out-of-process iframes.

content/renderer/render_widget_mouse_lock_dispatcher.h

+// 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.
+
+#ifndef CONTENT_RENDERER_RENDER_WIDGET_MOUSE_LOCK_DISPATCHER_H_
+#define CONTENT_RENDERER_RENDER_WIDGET_MOUSE_LOCK_DISPATCHER_H_
+
+#include "base/compiler_specific.h"
+#include "base/macros.h"
+#include "content/renderer/mouse_lock_dispatcher.h"
+
+namespace IPC {
+class Message;
+}
+
+namespace content {
+
+class RenderWidget;
+
+// RenderViewMouseLockDispatcher is owned by RenderViewImpl.

[dcheng, 2016/06/04 05:28:56]

This comment needs to be updated, I think.

[lfg, 2016/06/06 20:09:43]

Done.

+class RenderWidgetMouseLockDispatcher : public MouseLockDispatcher {
+ public:
+  explicit RenderWidgetMouseLockDispatcher(RenderWidget* render_widget);
+  ~RenderWidgetMouseLockDispatcher() override;
+
+  bool OnMessageReceived(const IPC::Message& message);
+
+ private:
+  // MouseLockDispatcher implementation.
+  void SendLockMouseRequest(bool unlocked_by_target) override;
+  void SendUnlockMouseRequest() override;
+
+  void OnLockMouseACK(bool succeeded);
+
+  RenderWidget* render_widget_;
+
+  DISALLOW_COPY_AND_ASSIGN(RenderWidgetMouseLockDispatcher);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_RENDER_WIDGET_MOUSE_LOCK_DISPATCHER_H_