[Extensions] Expand bindings access checks

BUG=601149
BUG=601073

Review URL: https://codereview.chromium.org/1866103002

Cr-Commit-Position: refs/heads/master@{#387710}
void Dispatcher::RunScriptsAtDocumentEnd(content::RenderFrame* render_frame) {
  ExtensionFrameHelper* frame_helper = ExtensionFrameHelper::Get(render_frame);
  if (!frame_helper)
    return;  // The frame is invisible to extensions.

  frame_helper->RunScriptsAtDocumentEnd();
}

void Dispatcher::RunScriptsAtDocumentEnd(content::RenderFrame* render_frame) {
  ExtensionFrameHelper* frame_helper = ExtensionFrameHelper::Get(render_frame);
  if (!frame_helper)
    return;  // The frame is invisible to extensions.

  frame_helper->RunScriptsAtDocumentEnd();
}
