[MD WebUI] Move icons used in Bookmarks and Settings to shared file.

chrome/browser/resources/settings/about_page/about_page.js

Index: chrome/browser/resources/settings/about_page/about_page.js
diff --git a/chrome/browser/resources/settings/about_page/about_page.js b/chrome/browser/resources/settings/about_page/about_page.js
index 2a3e7e06544990cfa73c2817f2dc94cb67290459..48c233c266369111164d36cfaa6fa216606fd3d8 100644
--- a/chrome/browser/resources/settings/about_page/about_page.js
+++ b/chrome/browser/resources/settings/about_page/about_page.js
@@ -290,16 +290,16 @@ Polymer({
     // If this platform has reached the end of the line, display an error icon
     // and ignore UpdateStatus.
     if (this.obsoleteSystemInfo_.endOfLine)
-      return 'settings:error';
+      return 'cr:error';
 
     switch (this.currentUpdateStatusEvent_.status) {
       case UpdateStatus.DISABLED_BY_ADMIN:
         return 'cr:domain';
       case UpdateStatus.FAILED:
-        return 'settings:error';
+        return 'cr:error';
       case UpdateStatus.UPDATED:
       case UpdateStatus.NEARLY_UPDATED:
-          return 'settings:check-circle';
+          return 'cr:check-circle';
       default:
           return null;
     }