Adds WmWindow and converts WindowState to use it

ash/wm/mru_window_tracker_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/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/test/ash_test_base.h"
 #include "ash/test/test_shelf_delegate.h"
 #include "ash/wm/mru_window_tracker.h"
 #include "ash/wm/window_state.h"
+#include "ash/wm/window_state_aura.h"
 #include "ash/wm/window_util.h"
 #include "base/compiler_specific.h"
 #include "ui/aura/test/test_window_delegate.h"
 #include "ui/aura/window.h"
 #include "ui/base/hit_test.h"
 #include "ui/views/widget/widget.h"
 
 namespace ash {
 
 class MruWindowTrackerTest : public test::AshTestBase {
@@ skipping 61 matching lines @@
   EXPECT_EQ(w5.get(), window_list[5]);
 }
 
 // Tests that windows being dragged are only in the WindowList once.
 TEST_F(MruWindowTrackerTest, DraggedWindowsInListOnlyOnce) {
   std::unique_ptr<aura::Window> w1(CreateWindow());
   wm::ActivateWindow(w1.get());
 
   // Start dragging the window.
   wm::GetWindowState(w1.get())->CreateDragDetails(
-      w1.get(), gfx::Point(), HTRIGHT, aura::client::WINDOW_MOVE_SOURCE_TOUCH);
+      gfx::Point(), HTRIGHT, aura::client::WINDOW_MOVE_SOURCE_TOUCH);
 
   // During a drag the window is reparented by the Docked container.
   aura::Window* drag_container = Shell::GetContainer(
       Shell::GetTargetRootWindow(), kShellWindowId_DockedContainer);
   drag_container->AddChild(w1.get());
   EXPECT_TRUE(wm::GetWindowState(w1.get())->is_dragged());
 
   // The dragged window should only be in the list once.
   MruWindowTracker::WindowList window_list =
       mru_window_tracker()->BuildWindowListIgnoreModal();
   EXPECT_EQ(1, std::count(window_list.begin(), window_list.end(), w1.get()));
 }
 
 }  // namespace ash