Revert of Speculative fix for sticky keys overlay crash.

ash/sticky_keys/sticky_keys_overlay.cc

Index: ash/sticky_keys/sticky_keys_overlay.cc
diff --git a/ash/sticky_keys/sticky_keys_overlay.cc b/ash/sticky_keys/sticky_keys_overlay.cc
index 464d9f684567166abb0b56576568fad8a1cb3289..0766ba25ad2e7cdda2ac5ed875254de6622073e0 100644
--- a/ash/sticky_keys/sticky_keys_overlay.cc
+++ b/ash/sticky_keys/sticky_keys_overlay.cc
@@ -109,7 +109,6 @@
 
   // views::WidgetDelegateView overrides:
   void OnPaint(gfx::Canvas* canvas) override;
-  void DeleteDelegate() override;
 
   void SetKeyState(ui::EventFlags modifier, StickyKeyState state);
 
@@ -165,13 +164,6 @@
   paint.setColor(SkColorSetARGB(0xB3, 0x55, 0x55, 0x55));
   canvas->DrawRoundRect(GetLocalBounds(), 2, paint);
   views::WidgetDelegateView::OnPaint(canvas);
-}
-
-void StickyKeysOverlayView::DeleteDelegate() {
-  // The ownership of a WidgetDelegateView is kind of tricky. It has the
-  // lifetime semantics of both a View and a WidgetDelegate. We should just rely
-  // on the Views semantics and do nothing here. This object will be deleted
-  // when the parent widget is deleted.
 }
 
 void StickyKeysOverlayView::SetKeyState(ui::EventFlags modifier,
@@ -287,10 +279,6 @@
   return overlay_view_->GetKeyState(modifier);
 }
 
-views::Widget* StickyKeysOverlay::GetWidgetForTesting() {
-  return overlay_widget_.get();
-}
-
 gfx::Rect StickyKeysOverlay::CalculateOverlayBounds() {
   int x = is_visible_ ? kHorizontalOverlayOffset : -widget_size_.width();
   return gfx::Rect(gfx::Point(x, kVerticalOverlayOffset), widget_size_);