don't display platform app resources in normal browser windows

chrome/browser/extensions/extension_service.cc

Index: chrome/browser/extensions/extension_service.cc
diff --git a/chrome/browser/extensions/extension_service.cc b/chrome/browser/extensions/extension_service.cc
index 354a661b1e95d9ab7c56e1e8c87acae1218fdf22..86442d1df6e18b33a43e7106f85edb4320ef5c03 100644
--- a/chrome/browser/extensions/extension_service.cc
+++ b/chrome/browser/extensions/extension_service.cc
@@ -2266,6 +2266,12 @@ bool ExtensionService::ExtensionBindingsAllowed(const GURL& url) {
                        extension->location() == Extension::COMPONENT);
 }
 
+bool ExtensionService::ShouldNotDisplayUrlInBrowserTab(const GURL& url) {
+  const Extension* extension = extensions_.GetExtensionOrAppByURL(
+      ExtensionURLInfo(url));
+  return extension && extension->is_platform_app();
+}
+
 gfx::Image ExtensionService::GetOmniboxIcon(
     const std::string& extension_id) {
   return gfx::Image(omnibox_icon_manager_.GetIcon(extension_id));