Cleanup: Remove unused arguments, member variable

ash/common/wm/overview/scoped_transform_overview_window.cc

Index: ash/common/wm/overview/scoped_transform_overview_window.cc
diff --git a/ash/common/wm/overview/scoped_transform_overview_window.cc b/ash/common/wm/overview/scoped_transform_overview_window.cc
index d353f4ed21f09a152fce18d79ed1f02fb43b706c..29bc0fc0c84746a1550ffea5ae1e7506525406a0 100644
--- a/ash/common/wm/overview/scoped_transform_overview_window.cc
+++ b/ash/common/wm/overview/scoped_transform_overview_window.cc
@@ -194,7 +194,6 @@ void ScopedTransformOverviewWindow::RestoreWindow() {
   BeginScopedAnimation(OverviewAnimationType::OVERVIEW_ANIMATION_RESTORE_WINDOW,
                        &animation_settings_list);
   SetTransform(window()->GetRootWindow(), original_transform_);
-  set_overview_transform(original_transform_);
 
   std::unique_ptr<ScopedOverviewAnimationSettings> animation_settings =
       CreateScopedOverviewAnimationSettings(
@@ -218,7 +217,7 @@ void ScopedTransformOverviewWindow::RestoreWindow() {
   }
   window_->GetWindowState()->set_ignored_by_shelf(ignored_by_shelf_);
   SetOpacity(original_opacity_);
-  ShowHeaderAndResetShape();
+  ShowHeader();
 }
 
 void ScopedTransformOverviewWindow::BeginScopedAnimation(
@@ -405,7 +404,7 @@ void ScopedTransformOverviewWindow::SetOpacity(float opacity) {
   }
 }
 
-void ScopedTransformOverviewWindow::HideHeaderAndSetShape(int radius) {
+void ScopedTransformOverviewWindow::HideHeader() {
   gfx::Rect bounds(GetTargetBoundsInScreen().size());
   const int inset = GetTopInset();
   if (inset > 0) {
@@ -420,7 +419,7 @@ void ScopedTransformOverviewWindow::HideHeaderAndSetShape(int radius) {
   }
 }
 
-void ScopedTransformOverviewWindow::ShowHeaderAndResetShape() {
+void ScopedTransformOverviewWindow::ShowHeader() {
   ui::Layer* layer = window()->GetLayer();
   if (original_window_shape_) {
     layer->SetAlphaShape(