Eliminate ash::internal namespace

ash/wm/workspace/workspace_window_resizer.h

 // Copyright (c) 2012 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_WINDOW_RESIZER_H_
 #define ASH_WM_WORKSPACE_WINDOW_RESIZER_H_
 
 #include <vector>
 
 #include "ash/wm/window_resizer.h"
 #include "ash/wm/workspace/magnetism_matcher.h"
 #include "ash/wm/workspace/snap_types.h"
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "ui/aura/window_tracker.h"
 
 namespace ash {
-namespace wm {
-class WindowState;
-}
-
-namespace internal {
-
 class DockedWindowLayoutManager;
 class PhantomWindowController;
 class TwoStepEdgeCycler;
 class WindowSize;
 
+namespace wm {
+class WindowState;
+}
+
 // WindowResizer implementation for workspaces. This enforces that windows are
 // not allowed to vertically move or resize outside of the work area. As windows
 // are moved outside the work area they are shrunk. We remember the height of
 // the window before it was moved so that if the window is again moved up we
 // attempt to restore the old height.
 class ASH_EXPORT WorkspaceWindowResizer : public WindowResizer {
  public:
   // When dragging an attached window this is the min size we'll make sure is
   // visible. In the vertical direction we take the max of this and that from
   // the delegate.
@@ skipping 174 matching lines @@
   // Used to determine if this has been deleted during a drag such as when a tab
   // gets dragged into another browser window.
   base::WeakPtrFactory<WorkspaceWindowResizer> weak_ptr_factory_;
 
   // Current instance for use by the WorkspaceWindowResizerTest.
   static WorkspaceWindowResizer* instance_;
 
   DISALLOW_COPY_AND_ASSIGN(WorkspaceWindowResizer);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_WORKSPACE_WINDOW_RESIZER_H_