chromeos: converts WindowResizer to aura::Window

ash/wm_window.cc

Index: ash/wm_window.cc
diff --git a/ash/wm_window.cc b/ash/wm_window.cc
index 66d1efd05cb2fec84dbc586d88f55f98b07ff390..54bded7f35d7e454d64ef89e2c8717eb30375827 100644
--- a/ash/wm_window.cc
+++ b/ash/wm_window.cc
@@ -444,14 +444,6 @@ ui::WindowShowState WmWindow::GetShowState() const {
   return window_->GetProperty(aura::client::kShowStateKey);
 }
 
-void WmWindow::SetPreMinimizedShowState(ui::WindowShowState show_state) {
-  window_->SetProperty(aura::client::kPreMinimizedShowStateKey, show_state);
-}
-
-ui::WindowShowState WmWindow::GetPreMinimizedShowState() const {
-  return window_->GetProperty(aura::client::kPreMinimizedShowStateKey);
-}
-
 void WmWindow::SetPreFullscreenShowState(ui::WindowShowState show_state) {
   // We should never store the ui::SHOW_STATE_MINIMIZED as the show state before
   // fullscreen.