[ash-md] Fades overview header in and out

ash/common/frame/custom_frame_view_ash.cc

Index: ash/common/frame/custom_frame_view_ash.cc
diff --git a/ash/common/frame/custom_frame_view_ash.cc b/ash/common/frame/custom_frame_view_ash.cc
index 511306bb09264409831f4f54457c15133145866a..c28ceea9f681c08bd7286fc16d1f5a71de6e15c3 100644
--- a/ash/common/frame/custom_frame_view_ash.cc
+++ b/ash/common/frame/custom_frame_view_ash.cc
@@ -196,6 +196,8 @@ CustomFrameViewAsh::CustomFrameViewAsh(
   // |header_view_| is set as the non client view's overlay view so that it can
   // overlay the web contents in immersive fullscreen.
   frame->non_client_view()->SetOverlayView(new OverlayView(header_view_));
+  frame_window->SetColorProperty(WmWindowProperty::TOP_VIEW_COLOR,
+                                 header_view_->GetInactiveFrameColor());
 
   // A delegate for a more complex way of fullscreening the window may already
   // be set. This is the case for packaged apps.
@@ -218,6 +220,9 @@ void CustomFrameViewAsh::InitImmersiveFullscreenControllerForView(
 void CustomFrameViewAsh::SetFrameColors(SkColor active_frame_color,
                                         SkColor inactive_frame_color) {
   header_view_->SetFrameColors(active_frame_color, inactive_frame_color);
+  WmWindow* frame_window = WmLookup::Get()->GetWindowForWidget(frame_);
+  frame_window->SetColorProperty(WmWindowProperty::TOP_VIEW_COLOR,
+                                 header_view_->GetInactiveFrameColor());
 }
 
 ////////////////////////////////////////////////////////////////////////////////