Remove some pass-thrus on RootWindow API in favor of exposing the RootWindowHost again.

ash/test/ash_test_base.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/test/ash_test_base.h"
 
 #include <string>
 #include <vector>
 
 #include "ash/ash_switches.h"
@@ skipping 103 matching lines @@
   if (!command_line->HasSwitch(switches::kAshHostWindowBounds)) {
     command_line->AppendSwitchASCII(
         switches::kAshHostWindowBounds, "1+1-800x600");
   }
 #if defined(OS_WIN)
   aura::test::SetUsePopupAsRootWindowForTest(true);
 #endif
   ash_test_helper_->SetUp(start_session_);
 
   Shell::GetPrimaryRootWindow()->Show();
-  Shell::GetPrimaryRootWindow()->GetDispatcher()->ShowRootWindow();
+  Shell::GetPrimaryRootWindow()->GetDispatcher()->host()->Show();
   // Move the mouse cursor to far away so that native events doesn't
   // interfere test expectations.
   Shell::GetPrimaryRootWindow()->MoveCursorTo(gfx::Point(-1000, -1000));
   ash::Shell::GetInstance()->cursor_manager()->EnableMouseEvents();
 
 #if defined(OS_WIN)
   if (base::win::GetVersion() >= base::win::VERSION_WIN8 &&
       !command_line->HasSwitch(ash::switches::kForceAshToDesktop)) {
     ipc_thread_.reset(new base::Thread("test_metro_viewer_ipc_thread"));
     base::Thread::Options options;
@@ skipping 198 matching lines @@
 
 void AshTestBase::UnblockUserSession() {
   Shell::GetInstance()->session_state_delegate()->UnlockScreen();
   SetSessionStarted(true);
   SetUserAddingScreenRunning(false);
 }
 
 
 }  // namespace test
 }  // namespace ash