Remove redundant icon from controlled setting popup bubble.

chrome/browser/resources/options/controlled_setting.css

 /* Copyright 2013 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. */
 
 /* Controlled setting indicator and bubble. */
 
 .controlled-setting-with-label {
   -webkit-box-align: center;
   display: -webkit-box;
   padding-bottom: 7px;
@@ skipping 35 matching lines @@
 
 .controlled-setting-indicator[controlled-by='extension'] > div {
   background-image: url('chrome://theme/IDR_CONTROLLED_SETTING_EXTENSION');
 }
 
 .controlled-setting-indicator:-webkit-any([controlled-by='recommended'],
     [controlled-by='hasRecommendation']) > div {
   background-image: url('chrome://theme/IDR_CONTROLLED_SETTING_MANDATORY');
 }
 
-.controlled-setting-bubble-content {
-  -webkit-padding-start: 30px;
-  background-repeat: no-repeat;
-  background-size: 22px;
-  min-height: 32px;
-}
-
-.controlled-setting-bubble-content[controlled-by='policy'] {
-  background-image: url('chrome://theme/IDR_CONTROLLED_SETTING_MANDATORY');
-}
-
-.controlled-setting-bubble-content[controlled-by='owner'] {
-  background-image: url('chrome://theme/IDR_CONTROLLED_SETTING_MANDATORY');
-}
-
-.controlled-setting-bubble-content[controlled-by='extension'] {
-  background-image: url('chrome://theme/IDR_CONTROLLED_SETTING_EXTENSION');

[Dan Beam, 2014/01/08 21:55:35]

^ where else is this used now?

[dconnelly, 2014/01/09 08:25:32]

Do you mean the resource? It's still used to mark the settings on the page, we
just aren't using it in the bubble.

-}
-
-.controlled-setting-bubble-content:-webkit-any([controlled-by='recommended'],
-    [controlled-by='hasRecommendation']) {
-  background-image: url('chrome://theme/IDR_CONTROLLED_SETTING_MANDATORY');
-}
-
-html[dir='rtl'] .controlled-setting-bubble-content {
-  background-position: right top;
-}
-
 .controlled-setting-bubble-action {
   padding: 0 !important;
 }
 
 .controlled-setting-bubble-content-row {
   height: 35px;
   position: relative;
 }
 
 .controlled-setting-bubble-extension-name {
@@ skipping 24 matching lines @@
 .controlled-setting-bubble-extension-disable-button {
   bottom: 0;
   position: absolute;
   right: 0;
 }
 
 html[dir='rtl'] .controlled-setting-bubble-extension-disable-button {
   left: 0;
   right: auto;
 }