aura: Remove layerless windows.

content/browser/renderer_host/render_widget_host_view_aura.cc

Index: content/browser/renderer_host/render_widget_host_view_aura.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_aura.cc b/content/browser/renderer_host/render_widget_host_view_aura.cc
index e9d6db7e466b26d5deccc8deeb9ca45a70f52c99..b7920be62d502bafab1e98f0fd5c7181287e1aa2 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.cc
+++ b/content/browser/renderer_host/render_widget_host_view_aura.cc
@@ -477,7 +477,7 @@ bool RenderWidgetHostViewAura::OnMessageReceived(
 void RenderWidgetHostViewAura::InitAsChild(
     gfx::NativeView parent_view) {
   window_->SetType(ui::wm::WINDOW_TYPE_CONTROL);
-  window_->Init(aura::WINDOW_LAYER_SOLID_COLOR);
+  window_->Init(ui::LAYER_SOLID_COLOR);
   window_->SetName("RenderWidgetHostViewAura");
   window_->layer()->SetColor(background_color_);
 }
@@ -506,7 +506,7 @@ void RenderWidgetHostViewAura::InitAsPopup(
   }
   popup_parent_host_view_->popup_child_host_view_ = this;
   window_->SetType(ui::wm::WINDOW_TYPE_MENU);
-  window_->Init(aura::WINDOW_LAYER_SOLID_COLOR);
+  window_->Init(ui::LAYER_SOLID_COLOR);
   window_->SetName("RenderWidgetHostViewAura");
   window_->layer()->SetColor(background_color_);
 
@@ -534,7 +534,7 @@ void RenderWidgetHostViewAura::InitAsFullscreen(
     RenderWidgetHostView* reference_host_view) {
   is_fullscreen_ = true;
   window_->SetType(ui::wm::WINDOW_TYPE_NORMAL);
-  window_->Init(aura::WINDOW_LAYER_SOLID_COLOR);
+  window_->Init(ui::LAYER_SOLID_COLOR);
   window_->SetName("RenderWidgetHostViewAura");
   window_->SetProperty(aura::client::kShowStateKey, ui::SHOW_STATE_FULLSCREEN);
   window_->layer()->SetColor(background_color_);