Adding ChromeVox as a component extensions (enabled only for ChromeOS, for no...

chrome/browser/resources/access_chromevox/chromevox/injected/main.js

+// Copyright (c) 2011 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.
+
+/**
+ * @fileoverview The main entry point for the extension content script.
+ *
+ * This is the only file that has access to the chrome.extension API
+ * from the content script, because all other scripts are loaded into the
+ * document head. So, any use of these extension APIs must be done in this
+ * file.
+ */
+
+// TODO(dmazzoni): pull in these dependencies without explicitly
+// calling the private method writeScriptTag_.
+function initialize() {
+  if (COMPILED) {
+    var loadCompiledScript = function(scriptRelPath) {
+      var scriptElt = document.createElement('script');
+      scriptElt.type = 'text/javascript';
+      scriptElt.src = chrome.extension.getURL(scriptRelPath);
+      document.getElementsByTagName('head')[0].appendChild(scriptElt);
+    };
+    if (BUILD_TYPE == BUILD_TYPE_CHROME) {
+      loadCompiledScript('/chromeVoxChromePageScript.js');
+    } else if (BUILD_TYPE == BUILD_TYPE_ANDROID_DEV) {
+      loadCompiledScript('/androidVoxDev.js');
+    } else {
+      throw 'Unknown or unsupported build type: ' + BUILD_TYPE;
+    }
+  } else {
+    goog.writeScriptTag_(chrome.extension.getURL('/closure/base.js'));
+    goog.writeScriptTag_(chrome.extension.getURL('../powerkey-bundle.js'));
+    goog.require('cvox.ChromeVoxInit');
+  }
+}
+
+initialize();