Chromium plumbing for Screen Orientation API orientationchange events.

content/browser/screen_orientation/screen_orientation_dispatcher_host.h

+// Copyright 2014 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_BROWSER_SCREEN_ORIENTATION_DISPATCHER_HOST_H_
+#define CONTENT_BROWSER_SCREEN_ORIENTATION_DISPATCHER_HOST_H_
+
+#include "content/public/browser/browser_message_filter.h"
+#include "third_party/WebKit/public/platform/WebScreenOrientation.h"
+
+namespace content {
+
+// ScreenOrientationDispatcherHost
+class ScreenOrientationDispatcherHost : public BrowserMessageFilter {
+ public:
+  ScreenOrientationDispatcherHost();
+
+  // BrowserMessageFilter
+  virtual bool OnMessageReceived(const IPC::Message&, bool*) OVERRIDE;
+
+  void OnOrientationChange(blink::WebScreenOrientation orientation);
+
+private:
+  virtual ~ScreenOrientationDispatcherHost() {}
+
+  DISALLOW_COPY_AND_ASSIGN(ScreenOrientationDispatcherHost);
+};
+
+}  // namespace content
+
+#endif // CONTENT_BROWSER_SCREEN_ORIENTATION_DISPATCHER_HOST_H_