Replicate sandbox flags for OOPIF (Chromium part 2)

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index 43dd881e612fcd9957b4a1fcdf6df1dc032a1131..6238e3509a98708f4e7f2dba8129a5b4ba0ce9e2 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -1986,14 +1986,6 @@ void RenderFrameImpl::didAccessInitialDocument(blink::WebLocalFrame* frame) {
     Send(new FrameHostMsg_DidAccessInitialDocument(routing_id_));
 }
 
-// TODO(alexmos): Remove once Blink is updated to use the version that takes
-// sandbox flags.
-blink::WebFrame* RenderFrameImpl::createChildFrame(
-    blink::WebLocalFrame* parent,
-    const blink::WebString& name) {
-  return createChildFrame(parent, name, blink::WebSandboxFlags::None);
-}
-
 blink::WebFrame* RenderFrameImpl::createChildFrame(
     blink::WebLocalFrame* parent,
     const blink::WebString& name,