Eliminate ash::internal namespace

ash/wm/workspace/two_step_edge_cycler.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 ASH_WM_WORKSPACE_TWO_STEP_EDGE_CYCLER_H_
 #define ASH_WM_WORKSPACE_TWO_STEP_EDGE_CYCLER_H_
 
 #include "ash/ash_export.h"
 #include "base/basictypes.h"
 #include "base/time/time.h"
 #include "ui/gfx/point.h"
 
 namespace ash {
 
-namespace internal {
-
 // TwoStepEdgeCycler is responsible for cycling between two modes when the mouse
 // is at the edge of the workspace. The cycler does not loop so it is impossible
 // to get back to the first mode once the second mode is reached.
 // TwoStepEdgeCycler should be destroyed once the mouse moves off the edge of
 // the workspace.
 class ASH_EXPORT TwoStepEdgeCycler {
  public:
   explicit TwoStepEdgeCycler(const gfx::Point& start);
   ~TwoStepEdgeCycler();
 
@@ skipping 12 matching lines @@
 
   // The number of moves since the cycler was constructed.
   int num_moves_;
 
   // Initial x-coordinate.
   int start_x_;
 
   DISALLOW_COPY_AND_ASSIGN(TwoStepEdgeCycler);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_WORKSPACE_TWO_STEP_EDGE_CYCLER_H_