Implement createfailed event for <extensionoptions>

chrome/browser/guest_view/extension_options/extension_options_guest.cc

Index: chrome/browser/guest_view/extension_options/extension_options_guest.cc
diff --git a/chrome/browser/guest_view/extension_options/extension_options_guest.cc b/chrome/browser/guest_view/extension_options/extension_options_guest.cc
index 3c8c4f5666259bf073bae23f9ecff3a27a6843c4..5e52787ed9ee0914910276dd90bf83cd7ff96b0f 100644
--- a/chrome/browser/guest_view/extension_options/extension_options_guest.cc
+++ b/chrome/browser/guest_view/extension_options/extension_options_guest.cc
@@ -65,11 +65,16 @@ void ExtensionOptionsGuest::CreateWebContents(
   // Get the extension's base URL.
   std::string extension_id;
   create_params.GetString(extensionoptions::kExtensionId, &extension_id);
-  if (extension_id.empty()) {
+
+  if (!extensions::Extension::IdIsValid(extension_id)) {
+    callback.Run(NULL);
+    return;
+  }
+
+  if (extension_id != embedder_extension_id) {
     callback.Run(NULL);
     return;
   }
-  DCHECK(extensions::Extension::IdIsValid(extension_id));
 
   GURL extension_url =
       extensions::Extension::GetBaseURLFromExtensionId(extension_id);