Don't use browser windows for platform app shell windows

chrome/renderer/extensions/schema_generated_bindings.cc

Index: chrome/renderer/extensions/schema_generated_bindings.cc
diff --git a/chrome/renderer/extensions/schema_generated_bindings.cc b/chrome/renderer/extensions/schema_generated_bindings.cc
index 1c5b76d47084e54c81575b02924b2799c5319c25..8d5ff851d9777c7eef2a83336d4b0432a06b84a3 100644
--- a/chrome/renderer/extensions/schema_generated_bindings.cc
+++ b/chrome/renderer/extensions/schema_generated_bindings.cc
@@ -312,6 +312,8 @@ class ExtensionImpl : public ChromeV8Extension {
       view_type = chrome::VIEW_TYPE_EXTENSION_POPUP;
     } else if (view_type_string == chrome::kViewTypeExtensionDialog) {
       view_type = chrome::VIEW_TYPE_EXTENSION_DIALOG;
+    } else if (view_type_string == chrome::kViewTypeAppShell) {
+      view_type = chrome::VIEW_TYPE_APP_SHELL;
     } else if (view_type_string != chrome::kViewTypeAll) {
       return v8::Undefined();
     }