HTML titlebars for v2 apps.

chrome/renderer/resources/extensions/app_window_custom_bindings.js

Index: chrome/renderer/resources/extensions/app_window_custom_bindings.js
diff --git a/chrome/renderer/resources/extensions/app_window_custom_bindings.js b/chrome/renderer/resources/extensions/app_window_custom_bindings.js
index ed430be286df5698911eb2394a619b402ff1515a..68e6a035a8eb9b3e38526ddee7c167f694bc4803 100644
--- a/chrome/renderer/resources/extensions/app_window_custom_bindings.js
+++ b/chrome/renderer/resources/extensions/app_window_custom_bindings.js
@@ -13,8 +13,14 @@ chromeHidden.registerCustomHook('app.window', function(bindingsAPI) {
   var apiFunctions = bindingsAPI.apiFunctions;
   apiFunctions.setCustomCallback('create', function(name, request, viewId) {
     var view = null;
-    if (viewId)
+    if (viewId) {
       view = GetView(viewId);
+      if (view) {
+        if (request.args[1].frame != 'none')
+          view._setHasTitlebarInternal(true);
+        delete view._setHasTitlebarInternal;
+      }
+    }
     if (request.callback) {
       request.callback(view);
       delete request.callback;