Revert of [Extensions] Finish freezing schema

chrome/test/data/extensions/api_test/stubs_app/background.js

Index: chrome/test/data/extensions/api_test/stubs_app/background.js
diff --git a/chrome/test/data/extensions/api_test/stubs_app/background.js b/chrome/test/data/extensions/api_test/stubs_app/background.js
index 50b729c3e8fe3edb72fced88ef2730994ce66c43..32ae43446fabc2dbd2d8d010b97fbd03bb6c46b7 100644
--- a/chrome/test/data/extensions/api_test/stubs_app/background.js
+++ b/chrome/test/data/extensions/api_test/stubs_app/background.js
@@ -22,8 +22,7 @@
     [module.functions, module.events].forEach(function(section) {
       if (typeof(section) == "undefined")
         return;
-      // Pieces of the module don't inherit from Array/Object.
-      Array.prototype.forEach.call(section, function(entry) {
+      section.forEach(function(entry) {
         apiPaths.push(namespace + "." + entry.name);
       });
     });