Implement the content/renderer and content/browser part of the Device Motion API.

content/browser/renderer_host/device_motion_browser_message_filter.h

Index: content/browser/renderer_host/device_motion_browser_message_filter.h
diff --git a/content/browser/renderer_host/device_motion_browser_message_filter.h b/content/browser/renderer_host/device_motion_browser_message_filter.h
new file mode 100644
index 0000000000000000000000000000000000000000..9b5e2d2c42ad9dd8f63e9027abc05dbbbd8f7821
--- /dev/null
+++ b/content/browser/renderer_host/device_motion_browser_message_filter.h
@@ -0,0 +1,38 @@
+// Copyright (c) 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 CONTENT_BROWSER_RENDERER_HOST_DEVICE_MOTION_BROWSER_MESSAGE_FILTER_H_
+#define CONTENT_BROWSER_RENDERER_HOST_DEVICE_MOTION_BROWSER_MESSAGE_FILTER_H_
+
+#include "base/compiler_specific.h"
+#include "base/shared_memory.h"
+#include "content/public/browser/browser_message_filter.h"
+
+namespace content {
+
+class DeviceMotionService;
+class RenderProcessHost;
+
+class DeviceMotionBrowserMessageFilter : public BrowserMessageFilter {
+ public:
+  DeviceMotionBrowserMessageFilter();
+
+  // BrowserMessageFilter implementation.
+  virtual bool OnMessageReceived(const IPC::Message& message,
+                                 bool* message_was_ok) OVERRIDE;
+
+ private:
+  virtual ~DeviceMotionBrowserMessageFilter();
+
+  void OnDeviceMotionStartPolling(base::SharedMemoryHandle* renderer_handle);
+  void OnDeviceMotionStopPolling();
+
+  bool is_started_;
+
+  DISALLOW_COPY_AND_ASSIGN(DeviceMotionBrowserMessageFilter);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_RENDERER_HOST_DEVICE_MOTION_BROWSER_MESSAGE_FILTER_H_