Compile chrome://settings, part 2: reduce from 950 to 400 errors

ui/webui/resources/js/cr/ui/bubble_button.js

Index: ui/webui/resources/js/cr/ui/bubble_button.js
diff --git a/ui/webui/resources/js/cr/ui/bubble_button.js b/ui/webui/resources/js/cr/ui/bubble_button.js
index 7216a2d4180b32e434a2e65d2aafec4875084eb6..4fbea7d0e6d583bc45aba91230f2b3e0fad4f5e9 100644
--- a/ui/webui/resources/js/cr/ui/bubble_button.js
+++ b/ui/webui/resources/js/cr/ui/bubble_button.js
@@ -8,6 +8,7 @@ cr.define('cr.ui', function() {
    * keyboard or mouse.
    * @constructor
    * @extends {HTMLSpanElement}
+   * @implements {EventListener}
    */
   var BubbleButton = cr.ui.define('span');
 
@@ -75,6 +76,15 @@ cr.define('cr.ui', function() {
       event.preventDefault();
       event.stopPropagation();
     },
+
+    /**
+     * Abstract method: subclasses should overwrite it. There is no way to mark
+     *     method as abstract for Closure Compiler, as of
+     *     https://github.com/google/closure-compiler/issues/104.
+     * @type {!Function|undefined}
+     * @private

[Dan Beam, 2014/09/09 02:59:09]

this can't be private [1], keep @protected just remove _

[1] https://code.google.com/p/chromium/codesearch#search/&q=toggleBubble

[Vitaly Pavlenko, 2014/09/09 17:54:51]

Done, in all files where it's used.

+     */
+    toggleBubble_: assertNotReached,
   };
 
   // Export.