Fix the typo "visibility".

ui/touch_selection/touch_handle.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_TOUCH_SELECTION_TOUCH_HANDLE_H_
 #define UI_TOUCH_SELECTION_TOUCH_HANDLE_H_
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/time/time.h"
@@ skipping 91 matching lines @@
 
   gfx::PointF position_;
   TouchHandleOrientation orientation_;
   TouchHandleOrientation deferred_orientation_;
 
   gfx::PointF touch_down_position_;
   gfx::Vector2dF touch_drag_offset_;
   base::TimeTicks touch_down_time_;
 
   // Note that when a fade animation is active, |is_visible_| and |position_|
-  // may not reflect the actual visibilty and position of the drawable. This
+  // may not reflect the actual visibility and position of the drawable. This
   // discrepancy is resolved either upon fade completion or cancellation.
   base::TimeTicks fade_end_time_;
   gfx::PointF fade_start_position_;
   float alpha_;
   bool animate_deferred_fade_;
 
   bool enabled_;
   bool is_visible_;
   bool is_dragging_;
   bool is_drag_within_tap_region_;
 
   DISALLOW_COPY_AND_ASSIGN(TouchHandle);
 };
 
 }  // namespace ui
 
 #endif  // UI_TOUCH_SELECTION_TOUCH_HANDLE_H_