Support the ignored_by_shelf flag for Mus windows.

chrome/browser/ui/views/status_bubble_views.cc

Index: chrome/browser/ui/views/status_bubble_views.cc
diff --git a/chrome/browser/ui/views/status_bubble_views.cc b/chrome/browser/ui/views/status_bubble_views.cc
index 3c9a14ea1f5c3acb5eb469c78539b1a09e8a09fd..f7627cb1a6bc7c984074896dfddc6a781ac14bf7 100644
--- a/chrome/browser/ui/views/status_bubble_views.cc
+++ b/chrome/browser/ui/views/status_bubble_views.cc
@@ -42,6 +42,11 @@
 #include "ash/wm/window_state_aura.h"
 #endif
 
+#if defined(MOJO_SHELL_CLIENT)
+#include "components/mus/public/cpp/property_type_converters.h"
+#include "components/mus/public/interfaces/window_manager.mojom.h"
+#endif
+
 // The alpha and color of the bubble's shadow.
 static const SkColor kShadowColor = SkColorSetARGB(30, 0, 0, 0);
 
@@ -600,6 +605,11 @@ void StatusBubbleViews::Init() {
     params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
     params.parent = frame->GetNativeView();
     params.context = frame->GetNativeWindow();
+#if defined(MOJO_SHELL_CLIENT)
+    params.mus_properties
+        [mus::mojom::WindowManager::kWindowIgnoredByShelf_Property] =
+        mojo::ConvertTo<std::vector<uint8_t>>(true);
+#endif
     popup_->Init(params);
     // We do our own animation and don't want any from the system.
     popup_->SetVisibilityChangedAnimationsEnabled(false);