Eliminate ash::internal namespace

ash/system/user/tray_user.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/system/user/tray_user.h"
 
 #include <algorithm>
 #include <climits>
 #include <vector>
 
@@ skipping 116 matching lines @@
   ash::SessionStateDelegate* delegate =
       ash::Shell::GetInstance()->session_state_delegate();
   ash::MultiProfileUMA::RecordSwitchActiveUser(
       ash::MultiProfileUMA::SWITCH_ACTIVE_USER_BY_TRAY);
   delegate->SwitchActiveUser(delegate->GetUserID(user_index));
 }
 
 }  // namespace
 
 namespace ash {
-namespace internal {
-
 namespace tray {
 
 // A custom image view with rounded edges.
 class RoundedImageView : public views::View {
  public:
   // Constructs a new rounded image view with rounded corners of radius
   // |corner_radius|. If |active_user| is set, the icon will be drawn in
   // full colors - otherwise it will fade into the background.
   RoundedImageView(int corner_radius, bool active_user);
   virtual ~RoundedImageView();
@@ skipping 1200 matching lines @@
   // If multi profile is not enabled we can use the normal index.
   if (!shell->delegate()->IsMultiProfilesEnabled())
     return multiprofile_index_;
   // In case of multi profile we need to mirror the indices since the system
   // tray items are in the reverse order then the menu items.
   return shell->session_state_delegate()->GetMaximumNumberOfLoggedInUsers() -
              1 - multiprofile_index_;
 }
 
 void TrayUser::UpdateLayoutOfItem() {
-  internal::RootWindowController* controller =
-      internal::GetRootWindowController(
-          system_tray()->GetWidget()->GetNativeWindow()->GetRootWindow());
+  RootWindowController* controller = GetRootWindowController(
+      system_tray()->GetWidget()->GetNativeWindow()->GetRootWindow());
   if (controller && controller->shelf()) {
     UpdateAfterShelfAlignmentChange(
         controller->GetShelfLayoutManager()->GetAlignment());
   }
 }
 
-}  // namespace internal
 }  // namespace ash