diff --git content/browser/renderer_host/render_widget_host_view_aura.cc content/browser/renderer_host/render_widget_host_view_aura.cc
index 204d1ae..0768d71 100644
--- content/browser/renderer_host/render_widget_host_view_aura.cc
+++ content/browser/renderer_host/render_widget_host_view_aura.cc
@@ -757,8 +757,10 @@ void RenderWidgetHostViewAura::SetBackgroundColor(SkColor color) {
   RenderWidgetHostViewBase::SetBackgroundColor(color);
   bool opaque = GetBackgroundOpaque();
   host_->SetBackgroundOpaque(opaque);
-  window_->layer()->SetFillsBoundsOpaquely(opaque);
-  window_->layer()->SetColor(color);
+  if (window_) {
+    window_->layer()->SetFillsBoundsOpaquely(opaque);
+    window_->layer()->SetColor(color);
+  }
 }
 
 bool RenderWidgetHostViewAura::IsMouseLocked() {