Check media permissions through RenderFrameHostDelegate.

extensions/browser/guest_view/web_view/web_view_guest.cc

Index: extensions/browser/guest_view/web_view/web_view_guest.cc
diff --git a/extensions/browser/guest_view/web_view/web_view_guest.cc b/extensions/browser/guest_view/web_view/web_view_guest.cc
index 0215e6fdcb7e19dde590433c7b6613e9774893a7..6d1570c80ceee8f71c085e811865dec3455b75be 100644
--- a/extensions/browser/guest_view/web_view/web_view_guest.cc
+++ b/extensions/browser/guest_view/web_view/web_view_guest.cc
@@ -791,6 +791,13 @@ void WebViewGuest::RequestMediaAccessPermission(
                                                             callback);
 }
 
+bool WebViewGuest::CheckMediaAccessPermission(content::WebContents* source,
+                                              const GURL& security_origin,
+                                              content::MediaStreamType type) {
+  return web_view_permission_helper_->CheckMediaAccessPermission(
+      source, security_origin, type);
+}
+
 void WebViewGuest::CanDownload(
     content::RenderViewHost* render_view_host,
     const GURL& url,