Revert of [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 5da9bf791c261ded18198c53b6580e43ef7c0c4b..84823022e8ed362bd8713621c610aa4458df3c17 100644
--- a/ash/mus/bridge/wm_window_mus.cc
+++ b/ash/mus/bridge/wm_window_mus.cc
@@ -296,12 +296,6 @@
   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();
@@ -336,27 +330,6 @@
 
   NOTREACHED();
   return false;
-}
-
-SkColor WmWindowMus::GetColorProperty(WmWindowProperty key) {
-  if (key == WmWindowProperty::TOP_VIEW_COLOR) {
-    // TODO: need support for TOP_VIEW_COLOR: http://crbug.com/615100.
-    NOTIMPLEMENTED();
-    return 0;
-  }
-
-  NOTREACHED();
-  return 0;
-}
-
-void WmWindowMus::SetColorProperty(WmWindowProperty key, SkColor value) {
-  if (key == WmWindowProperty::TOP_VIEW_COLOR) {
-    // TODO: need support for TOP_VIEW_COLOR: http://crbug.com/615100.
-    NOTIMPLEMENTED();
-    return;
-  }
-
-  NOTREACHED();
 }
 
 int WmWindowMus::GetIntProperty(WmWindowProperty key) {