Cleanup: Remove unused arguments, member variable

ash/common/wm/overview/window_selector_item.cc

Index: ash/common/wm/overview/window_selector_item.cc
diff --git a/ash/common/wm/overview/window_selector_item.cc b/ash/common/wm/overview/window_selector_item.cc
index 7342ddc505ac8ca4f44e9894d60131bde0b6ce88..e796bfd988a0503ed904975085a55af70101eccc 100644
--- a/ash/common/wm/overview/window_selector_item.cc
+++ b/ash/common/wm/overview/window_selector_item.cc
@@ -288,7 +288,7 @@ class WindowSelectorItem::RoundedContainerView
     if (0 != (sequence->properties() &
               ui::LayerAnimationElement::AnimatableProperty::OPACITY)) {
       if (item_)
-        item_->HideHeaderAndSetShape(0);
+        item_->HideHeader();
       StopObservingLayerAnimations();
       AnimateColor(gfx::Tween::EASE_IN, kSelectorColorSlideMilliseconds);
     }
@@ -508,8 +508,8 @@ void WindowSelectorItem::CloseWindow() {
   transform_window_.Close();
 }
 
-void WindowSelectorItem::HideHeaderAndSetShape(int radius) {
-  transform_window_.HideHeaderAndSetShape(radius);
+void WindowSelectorItem::HideHeader() {
+  transform_window_.HideHeader();
 }
 
 void WindowSelectorItem::SetDimmed(bool dimmed) {
@@ -572,7 +572,6 @@ void WindowSelectorItem::SetItemBounds(const gfx::Rect& target_bounds,
   ScopedTransformOverviewWindow::ScopedAnimationSettings animation_settings;
   transform_window_.BeginScopedAnimation(animation_type, &animation_settings);
   transform_window_.SetTransform(root_window_, transform);
-  transform_window_.set_overview_transform(transform);
 }
 
 void WindowSelectorItem::SetOpacity(float opacity) {