Replicate sandbox flags for OOPIF (Chromium part 2)

mojo/services/html_viewer/html_document.cc

Index: mojo/services/html_viewer/html_document.cc
diff --git a/mojo/services/html_viewer/html_document.cc b/mojo/services/html_viewer/html_document.cc
index 6bd33a186934aa0e66638c8ddf2b0ebd3bf8e8b0..6f6d3c6f69b6763ebea46a1e1e778255c070bd39 100644
--- a/mojo/services/html_viewer/html_document.cc
+++ b/mojo/services/html_viewer/html_document.cc
@@ -211,13 +211,6 @@ blink::WebMediaPlayer* HTMLDocument::createMediaPlayer(
                                                       initial_cdm, shell_);
 }
 
-// TODO(alexmos): Remove once Blink is updated to pass sandboxFlags.
-blink::WebFrame* HTMLDocument::createChildFrame(
-    blink::WebLocalFrame* parent,
-    const blink::WebString& frameName) {
-  return createChildFrame(parent, frameName, blink::WebSandboxFlags::None);
-}
-
 blink::WebFrame* HTMLDocument::createChildFrame(
     blink::WebLocalFrame* parent,
     const blink::WebString& frameName,