Convert app_bindings.js to the schema_generated_bindings.js infrastructure.

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.
 
 // Set up the global chrome object.
 chrome = {};
 
 var contextInfo = requireNative('context_info');
 var sgb = requireNative('schema_generated_bindings');
 
-require('app');
 require('webstore');
+require('json_schema');
+require('event_bindings');
+require('miscellaneous_bindings');
+require('schema_generated_bindings');
+require('apitest');
 
-if (contextInfo.IsBindingsAllowed()) {
-  require('json_schema');
-  require('event_bindings');
-  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);
-  });
-}
+// Load the custom bindings for each API.
+sgb.GetExtensionAPIDefinition().forEach(function(apiDef) {
+  if (contextInfo.IsAPIAllowed(apiDef.namespace))
+    require(apiDef.namespace);
+});