ContentSettings API should not interact with <webview>

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index e05cab0f097872512e1ae9eee65624193aa7bcf7..b58016e0b5ac4f663cb9b76e5b7fc95cc2a82189 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -1543,6 +1543,10 @@ FrameTree* WebContentsImpl::GetFrameTree() {
   return &frame_tree_;
 }
 
+bool WebContentsImpl::IsGuest() const {
+  return !!GetBrowserPluginGuest();
+}
+
 void WebContentsImpl::DidSendScreenRects(RenderWidgetHostImpl* rwh) {
   if (browser_plugin_embedder_)
     browser_plugin_embedder_->DidSendScreenRects();