Lazy load chrome.* APIs

chrome/renderer/resources/extensions/input.ime_custom_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.
 
-// Custom bindings for the input ime API. Only injected into the
+// Custom binding for the input ime API. Only injected into the
 // v8 contexts for extensions which have permission for the API.
 
-var chromeHidden = requireNative('chrome_hidden').GetChromeHidden();
+var binding = require('binding').Binding.create('input.ime');
 
-chromeHidden.registerCustomHook('input.ime', function() {
-  chrome.input.ime.onKeyEvent.dispatchToListener = function(callback, args) {
+binding.registerCustomHook('input.ime', function(api) {
+  input_ime = api.compiledApi;
+
+  input_ime.onKeyEvent.dispatchToListener = function(callback, args) {
     var engineID = args[0];
     var keyData = args[1];
 
     var result = false;
     try {
       result = chrome.Event.prototype.dispatchToListener(callback, args);
     } catch (e) {
       console.error('Error in event handler for onKeyEvent: ' + e.stack);
     }
-    if (!chrome.input.ime.onKeyEvent.async)
-      chrome.input.ime.keyEventHandled(keyData.requestId, result);
+    if (!input_ime.onKeyEvent.async)
+      input_ime.keyEventHandled(keyData.requestId, result);
   };
 
-  chrome.input.ime.onKeyEvent.addListener = function(cb, opt_extraInfo) {
-    chrome.input.ime.onKeyEvent.async = false;
+  input_ime.onKeyEvent.addListener = function(cb, opt_extraInfo) {
+    input_ime.onKeyEvent.async = false;
     if (opt_extraInfo instanceof Array) {
       for (var i = 0; i < opt_extraInfo.length; ++i) {
         if (opt_extraInfo[i] == "async") {
-          chrome.input.ime.onKeyEvent.async = true;
+          input_ime.onKeyEvent.async = true;
         }
       }
     }
     chrome.Event.prototype.addListener.call(this, cb, null);
   };
 });
+
+exports.binding = binding.generate();