Rename the aura_shell namespace to ash

ash/tooltips/tooltip_controller.cc

 // Copyright (c) 2011 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/tooltips/tooltip_controller.h"
 
 #include <vector>
 
 #include "ash/ash_switches.h"
 #include "ash/shell.h"
@@ skipping 103 matching lines @@
   params.keep_on_top = true;
   params.accept_events = false;
   params.transparent = true;
   params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
   widget->Init(params);
   return widget;
 }
 
 }  // namespace
 
-namespace aura_shell {
+namespace ash {
 namespace internal {
 
 // Displays a widget with tooltip using a views::Label.
 class TooltipController::Tooltip {
  public:
   Tooltip() {
     label_.set_background(
         views::Background::CreateSolidBackground(kTooltipBackground));
     if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kAuraNoShadows)) {
       label_.set_border(
@@ skipping 151 matching lines @@
       string16 tooltip_text(tooltip_text_);
       gfx::Point widget_loc = curr_mouse_loc_;
       widget_loc = widget_loc.Add(tooltip_window_->GetScreenBounds().origin());
       tooltip_->SetText(tooltip_text, widget_loc);
       tooltip_->Show();
     }
   }
 }
 
 }  // namespace internal
-}  // namespace aura_shell
+}  // namespace ash