Fix some minor typos related to the word "accelerate" and its derivative.

ui/accelerometer/accelerometer_types.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 UI_ACCEROMETER_ACCELEROMETER_TYPES_H_
-#define UI_ACCEROMETER_ACCELEROMETER_TYPES_H_
+#ifndef UI_ACCELEROMETER_ACCELEROMETER_TYPES_H_
+#define UI_ACCELEROMETER_ACCELEROMETER_TYPES_H_
 
 #include "base/macros.h"
 #include "ui/accelerometer/ui_accelerometer_export.h"
 #include "ui/gfx/geometry/vector3d_f.h"
 
 namespace ui {
 
 enum AccelerometerSource {
   // Accelerometer is located in the device's screen. In the screen's natural
   // orientation, positive X points to the right, consistent with the pixel
@@ skipping 47 matching lines @@
     data_[source].reading.set_y(y);
     data_[source].reading.set_z(z);
   }
 
  protected:
   AccelerometerReading data_[ACCELEROMETER_SOURCE_COUNT];
 
   DISALLOW_COPY_AND_ASSIGN(AccelerometerUpdate);
 };
 
-}  // namespace chromeos
+}  // namespace ui
 
-#endif  // UI_ACCEROMETER_ACCELEROMETER_TYPES_H_
+#endif  // UI_ACCELEROMETER_ACCELEROMETER_TYPES_H_