Lazy load chrome.* APIs

chrome/renderer/resources/extensions/runtime_custom_bindings.js

Index: chrome/renderer/resources/extensions/runtime_custom_bindings.js
diff --git a/chrome/renderer/resources/extensions/runtime_custom_bindings.js b/chrome/renderer/resources/extensions/runtime_custom_bindings.js
index a4db2a7e86e1b5610d837ccb533838fdd7f74679..618183c730cffbadfd37e7abd40fb01222f952e4 100644
--- a/chrome/renderer/resources/extensions/runtime_custom_bindings.js
+++ b/chrome/renderer/resources/extensions/runtime_custom_bindings.js
@@ -2,7 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Custom bindings for the runtime API.
+// Custom binding for the runtime API.
+
+var binding = require('binding').Binding.create('runtime');
 
 var runtimeNatives = requireNative('runtime');
 var extensionNatives = requireNative('extension');
@@ -13,14 +15,15 @@ var chromeHidden = requireNative('chrome_hidden').GetChromeHidden();
 var sendMessageUpdateArguments =
     require('miscellaneous_bindings').sendMessageUpdateArguments;
 
-chromeHidden.registerCustomHook('runtime', function(bindings, id, contextType) {
-  var apiFunctions = bindings.apiFunctions;
+binding.registerCustomHook(function(binding, id, contextType) {
+  var apiFunctions = binding.apiFunctions;
+  var runtime = binding.compiledApi;
 
   //
   // Unprivileged APIs.
   //
 
-  chrome.runtime.id = id;
+  runtime.id = id;
 
   apiFunctions.setHandleRequest('getManifest', function() {
     return runtimeNatives.GetManifest();
@@ -40,14 +43,14 @@ chromeHidden.registerCustomHook('runtime', function(bindings, id, contextType) {
 
   apiFunctions.setHandleRequest('sendMessage',
                                 function(targetId, message, responseCallback) {
-    var port = chrome.runtime.connect(targetId || chrome.runtime.id,
+    var port = runtime.connect(targetId || runtime.id,
         {name: chromeHidden.kMessageChannel});
     chromeHidden.Port.sendMessageImpl(port, message, responseCallback);
   });
 
   apiFunctions.setHandleRequest('sendNativeMessage',
                                 function(targetId, message, responseCallback) {
-    var port = chrome.runtime.connectNative(targetId);
+    var port = runtime.connectNative(targetId);
     chromeHidden.Port.sendMessageImpl(port, message, responseCallback);
   });
 
@@ -83,12 +86,12 @@ chromeHidden.registerCustomHook('runtime', function(bindings, id, contextType) {
 
   apiFunctions.setHandleRequest('connect', function(targetId, connectInfo) {
     if (!targetId)
-      targetId = chrome.runtime.id;
+      targetId = runtime.id;
     var name = '';
     if (connectInfo && connectInfo.name)
       name = connectInfo.name;
 
-    var portId = OpenChannelToExtension(chrome.runtime.id, targetId, name);
+    var portId = OpenChannelToExtension(runtime.id, targetId, name);
     if (portId >= 0)
       return chromeHidden.Port.createPort(portId, name);
     throw new Error('Error connecting to extension ' + targetId);
@@ -103,7 +106,7 @@ chromeHidden.registerCustomHook('runtime', function(bindings, id, contextType) {
   apiFunctions.setHandleRequest('connectNative',
                                 function(nativeAppName) {
     // Turn the object into a string here, because it eventually will be.
-    var portId = OpenChannelToNativeApp(chrome.runtime.id, nativeAppName);
+    var portId = OpenChannelToNativeApp(runtime.id, nativeAppName);
     if (portId >= 0) {
       return chromeHidden.Port.createPort(portId, '');
     }
@@ -120,3 +123,5 @@ chromeHidden.registerCustomHook('runtime', function(bindings, id, contextType) {
   });
 
 });
+
+exports.binding = binding.generate();