Add the "options_ui" extension manifest field.

chrome/browser/extensions/extension_context_menu_model.cc

Index: chrome/browser/extensions/extension_context_menu_model.cc
diff --git a/chrome/browser/extensions/extension_context_menu_model.cc b/chrome/browser/extensions/extension_context_menu_model.cc
index 022e935665f6e08e60cb2b0f8d942376e02d2489..ecdbf6c8dac3cc8964a3b7038b57701e02ac87f0 100644
--- a/chrome/browser/extensions/extension_context_menu_model.cc
+++ b/chrome/browser/extensions/extension_context_menu_model.cc
@@ -36,6 +36,7 @@
 #include "extensions/browser/uninstall_reason.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/feature_switch.h"
+#include "extensions/common/manifest_handlers/options_page_info.h"
 #include "ui/base/l10n/l10n_util.h"
 
 using content::OpenURLParams;
@@ -141,8 +142,9 @@ bool ExtensionContextMenuModel::IsCommandIdEnabled(int command_id) const {
       command_id <= IDC_EXTENSIONS_CONTEXT_CUSTOM_LAST) {
     return extension_items_->IsCommandIdEnabled(command_id);
   } else if (command_id == CONFIGURE) {
-    return
-        extensions::ManifestURL::GetOptionsPage(extension).spec().length() > 0;
+    return extensions::OptionsPageInfo::GetOptionsPage(extension)
+               .spec()
+               .length() > 0;

[not at google - send to devlin, 2014/08/29 05:39:23]

Weird. You can write (url.spec().length() > 0) as just (!url.is_empty()) - mind
changing that?

(as is already written below for whatever reason)

[ericzeng, 2014/08/29 22:08:49]

Done.

   } else if (command_id == NAME) {
     // The NAME links to the Homepage URL. If the extension doesn't have a
     // homepage, we just disable this menu item.
@@ -200,7 +202,8 @@ void ExtensionContextMenuModel::ExecuteCommand(int command_id,
       break;
     }
     case CONFIGURE:
-      DCHECK(!extensions::ManifestURL::GetOptionsPage(extension).is_empty());
+      DCHECK(
+          !extensions::OptionsPageInfo::GetOptionsPage(extension).is_empty());
       extensions::ExtensionTabUtil::OpenOptionsPage(extension, browser_);
       break;
     case TOGGLE_VISIBILITY: {