Add the ability to filter out extension IMEs from the language settings page.

chrome/browser/resources/options/language_list.js

Index: chrome/browser/resources/options/language_list.js
diff --git a/chrome/browser/resources/options/language_list.js b/chrome/browser/resources/options/language_list.js
index 4231cbaa37a1cff450f10a9797984dc432aa8f8d..947c1cb644600fff38c0e4f308a050af6ce9f50d 100644
--- a/chrome/browser/resources/options/language_list.js
+++ b/chrome/browser/resources/options/language_list.js
@@ -175,6 +175,13 @@ cr.define('options', function() {
     },
 
     /*
+     * Clear the selection

[James Hawkins, 2012/09/12 16:11:58]

nit: s/Clear/Clears/

[Zachary Kuznia, 2012/09/13 09:28:32]

Done.

+     */
+    clearSelection: function() {
+      this.selectionModel.unselectAll();
+    },
+
+    /*
      * Gets the language code of the selected language.
      */
     getSelectedLanguageCode: function() {