[WIP] Fire a theme changed notification when device scan completes

ui/views/widget/root_view.cc

 // Copyright (c) 2012 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/widget/root_view.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/macros.h"
@@ skipping 206 matching lines @@
 }
 
 void RootView::SetFocusTraversableParentView(View* view) {
   focus_traversable_parent_view_ = view;
 }
 
 // System events ---------------------------------------------------------------
 
 void RootView::ThemeChanged() {
   View::PropagateThemeChanged();
+  Layout();
 }
 
 void RootView::LocaleChanged() {
   View::PropagateLocaleChanged();
 }
 
 void RootView::DeviceScaleFactorChanged(float device_scale_factor) {
   View::PropagateDeviceScaleFactorChanged(device_scale_factor);
 }
 
@@ skipping 520 matching lines @@
 
 #ifndef NDEBUG
   DCHECK(!event_dispatch_target_ || Contains(event_dispatch_target_));
 #endif
 
   return details;
 }
 
 }  // namespace internal
 }  // namespace views