sensors: Remove prototype implementation

content/public/browser/sensors_listener.h

Index: content/public/browser/sensors_listener.h
diff --git a/content/public/browser/sensors_listener.h b/content/public/browser/sensors_listener.h
deleted file mode 100644
index 7edd04b7da9411b8151040a8706a42c2fc9ff337..0000000000000000000000000000000000000000
--- a/content/public/browser/sensors_listener.h
+++ /dev/null
@@ -1,32 +0,0 @@
-// Copyright (c) 2011 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_SENSORS_LISTENER_H_
-#define CONTENT_PUBLIC_BROWSER_SENSORS_LISTENER_H_
-#pragma once
-
-#include "content/public/browser/sensors.h"
-
-// The sensors API will unify various types of sensor data into a set of
-// channels, each of which provides change events and periodic updates.
-//
-// This version of the API is intended only to support the experimental screen
-// rotation code and is not for general use. In particular, the final listener
-// will declare generic |OnSensorChanged| and |OnSensorUpdated| methods, rather
-// than the special-purpose |OnScreenOrientationChanged|.
-
-namespace content {
-
-class SensorsListener {
- public:
-  // Called whenever the coarse orientation of the device changes.
-  virtual void OnScreenOrientationChanged(ScreenOrientation change) = 0;
-
- protected:
-  virtual ~SensorsListener() {}
-};
-
-}  // namespace content
-
-#endif  // CONTENT_PUBLIC_BROWSER_SENSORS_LISTENER_H_