Revert 125801 - Implement a module system for the extension bindings JS.

chrome/renderer/resources/extensions/setup_bindings.js

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-var contextInfo = requireNative('context_info');
-var sgb = requireNative('schema_generated_bindings');
-
-require('app');
-require('webstore');
-
-if (contextInfo.IsBindingsAllowed()) {
-  require('miscellaneous_bindings');
-  require('schema_generated_bindings');
-  require('apitest');
-
-  // Load the custom bindings for each API.
-  sgb.GetExtensionAPIDefinition().forEach(function(apiDef) {
-    if (contextInfo.IsAPIAllowed(apiDef.namespace))
-      require(apiDef.namespace);
-  });
-}