[ash-md] Fades overview header in and out

ash/aura/wm_window_aura.cc

Index: ash/aura/wm_window_aura.cc
diff --git a/ash/aura/wm_window_aura.cc b/ash/aura/wm_window_aura.cc
index f923414d7fe790cb5b17b0c18d99b55e00e06b5e..3fe4c6368e5fe28b716cdeac2d6da00516262778 100644
--- a/ash/aura/wm_window_aura.cc
+++ b/ash/aura/wm_window_aura.cc
@@ -248,6 +248,10 @@ float WmWindowAura::GetTargetOpacity() const {
   return window_->layer()->GetTargetOpacity();
 }
 
+gfx::Rect WmWindowAura::GetMinimizeAnimationTargetBoundsInScreen() const {
+  return ash::GetMinimizeAnimationTargetBoundsInScreen(window_);
+}
+
 void WmWindowAura::SetTransform(const gfx::Transform& transform) {
   window_->SetTransform(transform);
 }
@@ -286,6 +290,9 @@ int WmWindowAura::GetIntProperty(WmWindowProperty key) {
   if (key == WmWindowProperty::TOP_VIEW_INSET)
     return window_->GetProperty(aura::client::kTopViewInset);
 
+  if (key == WmWindowProperty::TOP_VIEW_COLOR)
+    return window_->GetProperty(aura::client::kTopViewColor);
+
   NOTREACHED();
   return 0;
 }
@@ -299,6 +306,10 @@ void WmWindowAura::SetIntProperty(WmWindowProperty key, int value) {
     window_->SetProperty(aura::client::kTopViewInset, value);
     return;
   }
+  if (key == WmWindowProperty::TOP_VIEW_COLOR) {
+    window_->SetProperty(aura::client::kTopViewColor, value);
+    return;
+  }
 
   NOTREACHED();
 }