Vibration API : migrate to device/vibration using mojo.

device/vibration/vibration_provider.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 CONTENT_PUBLIC_BROWSER_VIBRATION_PROVIDER_H_
-#define CONTENT_PUBLIC_BROWSER_VIBRATION_PROVIDER_H_
+#ifndef DEVICE_VIBRATION_VIBRATION_PROVIDER_H_
+#define DEVICE_VIBRATION_VIBRATION_PROVIDER_H_
 
-namespace content {
+namespace device {
 
 class VibrationProvider {
  public:
   // Device should start vibrating for N milliseconds.
   virtual void Vibrate(int64 milliseconds) = 0;
 
   // Cancels vibration of the device.
   virtual void CancelVibration() = 0;
 
   virtual ~VibrationProvider() {}
 };
 
-}  // namespace content
+}  // namespace device
 
-#endif // CONTENT_PUBLIC_BROWSER_VIBRATION_PROVIDER_H_
+#endif // DEVICE_VIBRATION_VIBRATION_PROVIDER_H_