[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..27bd930cd44025dab5b3098e25b60e9cc1dbc364 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);
 }
@@ -279,6 +283,23 @@ bool WmWindowAura::GetBoolProperty(WmWindowProperty key) {
   return false;
 }
 
+SkColor WmWindowAura::GetColorProperty(WmWindowProperty key) {
+  if (key == WmWindowProperty::TOP_VIEW_COLOR)
+    return window_->GetProperty(aura::client::kTopViewColor);
+
+  NOTREACHED();
+  return 0;
+}
+
+void WmWindowAura::SetColorProperty(WmWindowProperty key, SkColor value) {
+  if (key == WmWindowProperty::TOP_VIEW_COLOR) {
+    window_->SetProperty(aura::client::kTopViewColor, value);
+    return;
+  }
+
+  NOTREACHED();
+}
+
 int WmWindowAura::GetIntProperty(WmWindowProperty key) {
   if (key == WmWindowProperty::SHELF_ID)
     return GetShelfIDForWindow(window_);