Adds views::corewm::WMState to install common state

ui/views/test/views_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 "ui/views/test/views_test_base.h"
 
 #include "base/run_loop.h"
 #include "ui/base/clipboard/clipboard.h"
 #include "ui/base/ime/input_method_initializer.h"
 
 #if defined(USE_AURA)
 #include "ui/aura/env.h"
 #include "ui/aura/root_window.h"
 #include "ui/aura/test/aura_test_helper.h"
 #include "ui/views/corewm/capture_controller.h"
-#include "ui/views/corewm/transient_window_stacking_client.h"
+#include "ui/views/corewm/wm_state.h"
 #endif
 
 namespace views {
 
 ViewsTestBase::ViewsTestBase()
     : setup_called_(false),
       teardown_called_(false) {
 }
 
 ViewsTestBase::~ViewsTestBase() {
   CHECK(setup_called_)
       << "You have overridden SetUp but never called super class's SetUp";
   CHECK(teardown_called_)
       << "You have overrideen TearDown but never called super class's TearDown";
 }
 
 void ViewsTestBase::SetUp() {
   testing::Test::SetUp();
   setup_called_ = true;
   if (!views_delegate_.get())
     views_delegate_.reset(new TestViewsDelegate());
 #if defined(USE_AURA)
   aura_test_helper_.reset(new aura::test::AuraTestHelper(&message_loop_));
   aura_test_helper_->SetUp();
-  // SetWindowStackingClient() takes ownership of TransientWindowStackingClient.
-  aura::client::SetWindowStackingClient(
-      new corewm::TransientWindowStackingClient);
+  wm_state_.reset(new views::corewm::WMState);
 #endif  // USE_AURA
   ui::InitializeInputMethodForTesting();
 }
 
 void ViewsTestBase::TearDown() {
   ui::Clipboard::DestroyClipboardForCurrentThread();
 
   // Flush the message loop because we have pending release tasks
   // and these tasks if un-executed would upset Valgrind.
   RunPendingMessages();
   teardown_called_ = true;
   views_delegate_.reset();
   testing::Test::TearDown();
   ui::ShutdownInputMethodForTesting();
 #if defined(USE_AURA)
   aura_test_helper_->TearDown();
-  aura::client::SetWindowStackingClient(NULL);
+  wm_state_.reset();
   CHECK(!corewm::ScopedCaptureClient::IsActive());
 #endif  // USE_AURA
 }
 
 void ViewsTestBase::RunPendingMessages() {
   base::RunLoop run_loop;
 #if defined(USE_AURA)
   run_loop.set_dispatcher(aura::Env::GetInstance()->GetDispatcher());
 #endif
   run_loop.RunUntilIdle();
@@ skipping 10 matching lines @@
 
 gfx::NativeView ViewsTestBase::GetContext() {
 #if defined(USE_AURA)
   return aura_test_helper_->root_window();
 #else
   return NULL;
 #endif
 }
 
 }  // namespace views