[mus+ash] Removes WmWindow from ash/wm/mru_window_tracker and overview mode

ash/wm/maximize_mode/maximize_mode_window_state.cc

 // Copyright 2014 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/wm/maximize_mode/maximize_mode_window_state.h"
 
 #include <utility>
 
 #include "ash/public/cpp/shell_window_ids.h"
 #include "ash/screen_util.h"
@@ skipping 93 matching lines @@
 // static
 void MaximizeModeWindowState::UpdateWindowPosition(
     wm::WindowState* window_state) {
   gfx::Rect bounds_in_parent = GetBoundsInMaximizedMode(window_state);
   if (bounds_in_parent == window_state->window()->bounds())
     return;
   window_state->SetBoundsDirect(bounds_in_parent);
 }
 
 MaximizeModeWindowState::MaximizeModeWindowState(
-    WmWindow* window,
+    aura::Window* window,
     MaximizeModeWindowManager* creator)
     : window_(window),
       creator_(creator),
-      current_state_type_(window->GetWindowState()->GetStateType()),
+      current_state_type_(wm::GetWindowState(window)->GetStateType()),
       defer_bounds_updates_(false) {
-  old_state_.reset(window_->GetWindowState()
+  old_state_.reset(wm::GetWindowState(window)
                        ->SetStateObject(std::unique_ptr<State>(this))
                        .release());
 }
 
 MaximizeModeWindowState::~MaximizeModeWindowState() {
   creator_->WindowStateDestroyed(window_);
 }
 
 void MaximizeModeWindowState::LeaveMaximizeMode(wm::WindowState* window_state) {
   // Note: When we return we will destroy ourselves with the |our_reference|.
   std::unique_ptr<wm::WindowState::State> our_reference =
       window_state->SetStateObject(std::move(old_state_));
 }
 
 void MaximizeModeWindowState::SetDeferBoundsUpdates(bool defer_bounds_updates) {
   if (defer_bounds_updates_ == defer_bounds_updates)
     return;
 
   defer_bounds_updates_ = defer_bounds_updates;
   if (!defer_bounds_updates_)
-    UpdateBounds(window_->GetWindowState(), true);
+    UpdateBounds(wm::GetWindowState(window_), true);
 }
 
 void MaximizeModeWindowState::OnWMEvent(wm::WindowState* window_state,
                                         const wm::WMEvent* event) {
   // Ignore events that are sent during the exit transition.
   if (ignore_wm_events_) {
     return;
   }
 
   switch (event->type()) {
@@ skipping 190 matching lines @@
       // avoid flashing.
       if (window_state->IsMaximized())
         window_state->SetBoundsDirectCrossFade(bounds_in_parent);
       else
         window_state->SetBoundsDirectAnimated(bounds_in_parent);
     }
   }
 }
 
 }  // namespace ash