mash: Make system tray bubble close when another window is activated

ui/views/mus/native_widget_mus.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/views/mus/native_widget_mus.h"
 
 #include "base/macros.h"
 #include "base/thread_task_runner_handle.h"
 #include "components/mus/public/cpp/property_type_converters.h"
 #include "components/mus/public/cpp/window.h"
@@ skipping 307 matching lines @@
 void NativeWidgetMus::OnActivationChanged(bool active) {
   if (!native_widget_delegate_)
     return;
   if (active) {
     native_widget_delegate_->OnNativeFocus();
     GetWidget()->GetFocusManager()->RestoreFocusedView();
   } else {
     native_widget_delegate_->OnNativeBlur();
     GetWidget()->GetFocusManager()->StoreFocusedView(true);
   }
+  native_widget_delegate_->OnNativeWidgetActivationChanged(active);
 }
 
 void NativeWidgetMus::UpdateClientArea() {
   NonClientView* non_client_view =
       native_widget_delegate_->AsWidget()->non_client_view();
   if (!non_client_view || !non_client_view->client_view())
     return;
 
   const gfx::Rect client_area_rect(non_client_view->client_view()->bounds());
   window_->SetClientArea(gfx::Insets(
@@ skipping 660 matching lines @@
     window_tree_host_->Show();
     GetNativeWindow()->Show();
   } else {
     window_tree_host_->Hide();
     GetNativeWindow()->Hide();
   }
   native_widget_delegate_->OnNativeWidgetVisibilityChanged(window->visible());
 }
 
 }  // namespace views