Eliminate ash::internal namespace

ash/wm/drag_window_resizer.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/wm/drag_window_resizer.h"
 
 #include "ash/display/mouse_cursor_event_filter.h"
 #include "ash/screen_util.h"
 #include "ash/shell.h"
 #include "ash/wm/coordinate_conversion.h"
 #include "ash/wm/drag_window_controller.h"
 #include "ash/wm/window_state.h"
 #include "ash/wm/window_util.h"
 #include "base/memory/weak_ptr.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/env.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_delegate.h"
 #include "ui/aura/window_event_dispatcher.h"
 #include "ui/base/hit_test.h"
 #include "ui/base/ui_base_types.h"
 #include "ui/gfx/screen.h"
 #include "ui/wm/core/window_util.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 // The maximum opacity of the drag phantom window.
 const float kMaxOpacity = 0.8f;
 
 // Returns true if Ash has more than one root window.
 bool HasSecondaryRootWindow() {
   return Shell::GetAllRootWindows().size() > 1;
 }
 
@@ skipping 166 matching lines @@
   }
 }
 
 bool DragWindowResizer::ShouldAllowMouseWarp() {
   return (details().window_component == HTCAPTION) &&
       !::wm::GetTransientParent(GetTarget()) &&
       (GetTarget()->type() == ui::wm::WINDOW_TYPE_NORMAL ||
        GetTarget()->type() == ui::wm::WINDOW_TYPE_PANEL);
 }
 
-}  // namespace internal
 }  // namespace ash