Add an update warning for downloading over mobile data

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

Index: chrome/browser/resources/settings/about_page/about_page_browser_proxy.js
diff --git a/chrome/browser/resources/settings/about_page/about_page_browser_proxy.js b/chrome/browser/resources/settings/about_page/about_page_browser_proxy.js
index 2b592acb5631f84a196c887c13c8f205cfcb8abe..6e7da7164a9ea341624fbf38fbf922d7a3388d47 100644
--- a/chrome/browser/resources/settings/about_page/about_page_browser_proxy.js
+++ b/chrome/browser/resources/settings/about_page/about_page_browser_proxy.js
@@ -58,6 +58,7 @@ var UpdateStatus = {
   FAILED: 'failed',
   DISABLED: 'disabled',
   DISABLED_BY_ADMIN: 'disabled_by_admin',
+  NEED_PERMISSION_TO_UPDATE: 'need_permission_to_update',
 };
 
 // <if expr="_google_chrome and is_macosx">
@@ -213,6 +214,10 @@ cr.define('settings', function() {
       chrome.send('requestUpdate');
     },
 
+    requestUpdateOverCellular: function(target_version, target_size) {
+      chrome.send('requestUpdateOverCellular', [target_version, target_size]);
+    },
+
     /** @override */
     setChannel: function(channel, isPowerwashAllowed) {
       chrome.send('setChannel', [channel, isPowerwashAllowed]);