Eliminate ash::internal namespace

ash/first_run/first_run_helper_unittest.cc

 // Copyright 2013 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/first_run/first_run_helper.h"
 
 #include "ash/first_run/desktop_cleaner.h"
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/test/ash_test_base.h"
@@ skipping 62 matching lines @@
   virtual void TearDown() OVERRIDE {
     EXPECT_TRUE(helper_.get());
     helper_.reset();
     CheckContainersAreVisible();
     AshTestBase::TearDown();
   }
 
   void CheckContainersAreVisible() const {
     aura::Window* root_window = Shell::GetInstance()->GetPrimaryRootWindow();
     std::vector<int> containers_to_check =
-        internal::DesktopCleaner::GetContainersToHideForTest();
+        DesktopCleaner::GetContainersToHideForTest();
     for (size_t i = 0; i < containers_to_check.size(); ++i) {
       aura::Window* container =
           Shell::GetContainer(root_window, containers_to_check[i]);
       EXPECT_TRUE(container->IsVisible());
     }
   }
 
   void CheckContainersAreHidden() const {
     aura::Window* root_window = Shell::GetInstance()->GetPrimaryRootWindow();
     std::vector<int> containers_to_check =
-        internal::DesktopCleaner::GetContainersToHideForTest();
+        DesktopCleaner::GetContainersToHideForTest();
     for (size_t i = 0; i < containers_to_check.size(); ++i) {
       aura::Window* container =
           Shell::GetContainer(root_window, containers_to_check[i]);
       EXPECT_TRUE(!container->IsVisible());
     }
   }
 
   FirstRunHelper* helper() { return helper_.get(); }
 
   int cancelled_times() const { return cancelled_times_; }
@@ skipping 33 matching lines @@
   EXPECT_TRUE(overlay_window->HasFocus());
   int mouse_events;
   overlay_window->SetEventFilter(new CountingEventHandler(&mouse_events));
   GetEventGenerator().PressLeftButton();
   GetEventGenerator().ReleaseLeftButton();
   EXPECT_EQ(mouse_events, 2);
 }
 
 }  // namespace test
 }  // namespace ash