Sets the default background color of inline signin and user manager to grey

content/browser/renderer_host/render_widget_host_view_android.cc

Index: content/browser/renderer_host/render_widget_host_view_android.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_android.cc b/content/browser/renderer_host/render_widget_host_view_android.cc
index e7336e28507d7b642b2e5d92abf23f454822a89b..161c8db01733a0e66ed3c1f2d4c60925dfcc3d4b 100644
--- a/content/browser/renderer_host/render_widget_host_view_android.cc
+++ b/content/browser/renderer_host/render_widget_host_view_android.cc
@@ -811,9 +811,10 @@ void RenderWidgetHostViewAndroid::SelectionBoundsChanged(
   NOTREACHED() << "Selection bounds should be routed through the compositor.";
 }
 
-void RenderWidgetHostViewAndroid::SetBackgroundOpaque(bool opaque) {
-  RenderWidgetHostViewBase::SetBackgroundOpaque(opaque);
-  host_->SetBackgroundOpaque(opaque);
+void RenderWidgetHostViewAndroid::SetBackgroundColor(SkColor color) {
+  RenderWidgetHostViewBase::SetBackgroundColor(color);
+  host_->SetBackgroundOpaque(GetBackgroundOpaque());
+  OnDidChangeBodyBackgroundColor(color);
 }
 
 void RenderWidgetHostViewAndroid::CopyFromCompositingSurface(