Eliminate ash::internal namespace

ash/drag_drop/drag_drop_controller.cc

 // 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.
 
 #include "ash/drag_drop/drag_drop_controller.h"
 
 #include "ash/drag_drop/drag_drop_tracker.h"
 #include "ash/drag_drop/drag_image_view.h"
 #include "ash/shell.h"
 #include "ash/wm/coordinate_conversion.h"
@@ skipping 13 matching lines @@
 #include "ui/gfx/animation/linear_animation.h"
 #include "ui/gfx/path.h"
 #include "ui/gfx/point.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/rect_conversions.h"
 #include "ui/views/views_delegate.h"
 #include "ui/views/widget/native_widget_aura.h"
 #include "ui/wm/public/drag_drop_delegate.h"
 
 namespace ash {
-namespace internal {
+namespace {
 
-namespace {
 // The duration of the drag cancel animation in millisecond.
 const int kCancelAnimationDuration = 250;
 const int kTouchCancelAnimationDuration = 20;
 // The frame rate of the drag cancel animation in hertz.
 const int kCancelAnimationFrameRate = 60;
 
 // For touch initiated dragging, we scale and shift drag image by the following:
 static const float kTouchDragImageScale = 1.2f;
 static const int kTouchDragImageVerticalOffset = -25;
 
@@ skipping 506 matching lines @@
 void DragDropController::Cleanup() {
   if (drag_window_)
     drag_window_->RemoveObserver(this);
   drag_window_ = NULL;
   drag_data_ = NULL;
   // Cleanup can be called again while deleting DragDropTracker, so use Pass
   // instead of reset to avoid double free.
   drag_drop_tracker_.Pass();
 }
 
-}  // namespace internal
 }  // namespace ash