Reland r57788 - Expose Extension Bindings to Component Applications

chrome/renderer/resources/extension_process_bindings.js

 // Copyright (c) 2010 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.
 
 // This script contains privileged chrome extension related javascript APIs.
 // It is loaded by pages whose URL has the chrome-extension protocol.
 
 var chrome = chrome || {};
 (function() {
   native function GetExtensionAPIDefinition();
   native function StartRequest();
   native function GetCurrentPageActions(extensionId);
   native function GetExtensionViews();
   native function GetChromeHidden();
   native function GetNextRequestId();
   native function OpenChannelToTab();
   native function GetRenderViewId();
   native function GetPopupParentWindow();
   native function GetPopupView();
   native function SetIconCommon();
   native function IsExtensionProcess();
 
   var chromeHidden = GetChromeHidden();
 
   // These bindings are for the extension process only. Since a chrome-extension
   // URL can be loaded in an iframe of a regular renderer, we check here to
   // ensure we don't expose the APIs in that case.
   if (!IsExtensionProcess()) {
     chromeHidden.onLoad.addListener(function (extensionId) {
+      if (!extensionId) {
+        return;
+      }
       chrome.initExtension(extensionId, false);
     });
     return;
   }
 
   if (!chrome)
     chrome = {};
 
   // Validate arguments.
   chromeHidden.validationTypes = [];
@@ skipping 249 matching lines @@
     chrome.experimental.omnibox.onInputChanged.dispatch =
         function(text, requestId) {
       var suggestCallback = function(suggestions) {
         chrome.experimental.omnibox.sendSuggestions(requestId, suggestions);
       }
       chrome.Event.prototype.dispatch.apply(this, [text, suggestCallback]);
     };
   }
 
   chromeHidden.onLoad.addListener(function (extensionId) {
+    if (!extensionId) {
+      return;
+    }
     chrome.initExtension(extensionId, false);
 
     // |apiFunctions| is a hash of name -> object that stores the
     // name & definition of the apiFunction. Custom handling of api functions
     // is implemented by adding a "handleRequest" function to the object.
     var apiFunctions = {};
 
     // Read api definitions and setup api functions in the chrome namespace.
     // TODO(rafaelw): Consider defining a json schema for an api definition
     //   and validating either here, in a unit_test or both.
@@ skipping 406 matching lines @@
 
   if (!chrome.experimental)
     chrome.experimental = {};
 
   if (!chrome.experimental.accessibility)
     chrome.experimental.accessibility = {};
 
   if (!chrome.experimental.tts)
     chrome.experimental.tts = {};
 })();