Propagate auto-resize viewport values to OOPIF processes

content/browser/renderer_host/render_widget_host_delegate.cc

Index: content/browser/renderer_host/render_widget_host_delegate.cc
diff --git a/content/browser/renderer_host/render_widget_host_delegate.cc b/content/browser/renderer_host/render_widget_host_delegate.cc
index cb32ee9f9611446d575b185ded5992bbabf512b8..2cad1fb9ebd437823f3d8e14f398835667b0f19c 100644
--- a/content/browser/renderer_host/render_widget_host_delegate.cc
+++ b/content/browser/renderer_host/render_widget_host_delegate.cc
@@ -111,6 +111,10 @@ void RenderWidgetHostDelegate::UpdateUrlForUkmSource(
     ukm::UkmRecorder* service,
     ukm::SourceId ukm_source_id) {}
 
+gfx::Size RenderWidgetHostDelegate::GetAutoResizeSize() {
+  return gfx::Size();
+}
+
 WebContents* RenderWidgetHostDelegate::GetAsWebContents() {
   return nullptr;
 }