[ash-md] Fades overview header in and out

ash/mus/bridge/wm_window_mus.cc

Index: ash/mus/bridge/wm_window_mus.cc
diff --git a/ash/mus/bridge/wm_window_mus.cc b/ash/mus/bridge/wm_window_mus.cc
index 84823022e8ed362bd8713621c610aa4458df3c17..d0199607e39f4c5aaf3d4970aebd1267ce07fc55 100644
--- a/ash/mus/bridge/wm_window_mus.cc
+++ b/ash/mus/bridge/wm_window_mus.cc
@@ -296,6 +296,12 @@ float WmWindowMus::GetTargetOpacity() const {
   return window_->opacity();
 }
 
+gfx::Rect WmWindowMus::GetMinimizeAnimationTargetBoundsInScreen() const {
+  // TODO: need animation support: http://crbug.com/615087.
+  NOTIMPLEMENTED();
+  return GetBoundsInScreen();
+}
+
 void WmWindowMus::SetTransform(const gfx::Transform& transform) {
   // TODO: mus needs to support transforms: http://crbug.com/615089.
   NOTIMPLEMENTED();
@@ -344,6 +350,12 @@ int WmWindowMus::GetIntProperty(WmWindowProperty key) {
     return 0;
   }
 
+  if (key == WmWindowProperty::TOP_VIEW_COLOR) {
+    // TODO: need support for TOP_VIEW_COLOR: http://crbug.com/615100.
+    NOTIMPLEMENTED();
+    return 0;
+  }
+
   NOTREACHED();
   return 0;
 }