Remove the google drive option on the settings page for supervized user

BUG=253660
TEST=manual
TBR=estade@chromium.org

This is reland of http://crrev.com/209125

Review URL: https://chromiumcodereview.appspot.com/18197002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@209347 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/resources/options/browser_options.html

@@ -527,7 +527,7 @@
         </span>
       </div>
 <if expr="pp_ifdef('chromeos')">
-      <div class="checkbox" guest-visibility="disabled">
+      <div class="checkbox" id="disable-drive-row" guest-visibility="disabled">
         <span class="controlled-setting-with-label">
           <input id="drive-disabled" type="checkbox"
               pref="gdata.disabled"

chrome/browser/resources/options/browser_options.js

@@ -382,6 +382,9 @@ cr.define('options', function() {
         $('autoOpenFileTypesResetToDefault').onclick = function(event) {
           chrome.send('autoOpenFileTypesAction');
         };
+      } else {
+        $('disable-drive-row').hidden =
+            UIAccountTweaks.loggedInAsLocallyManagedUser();
       }
 
       // HTTPS/SSL section.

chrome/browser/ui/webui/chromeos/ui_account_tweaks.cc

@@ -29,6 +29,9 @@ void AddAccountUITweaksLocalizedValues(
 
   localized_strings->SetBoolean("loggedInAsGuest",
       UserManager::Get()->IsLoggedInAsGuest());
+
+  localized_strings->SetBoolean("loggedInAsLocallyManagedUser",
+      UserManager::Get()->IsLoggedInAsLocallyManagedUser());
 }
 
 void AddAccountUITweaksLocalizedValues(

ui/webui/resources/js/chromeos/ui_account_tweaks.js

@@ -38,6 +38,13 @@ cr.define('uiAccountTweaks', function() {
     return loadTimeData.getBoolean('loggedInAsGuest');
   };
 
+  /**
+   * @return {boolean} Whether we're currently in supervised user mode.
+   */
+  UIAccountTweaks.loggedInAsLocallyManagedUser = function() {
+    return loadTimeData.getBoolean('loggedInAsLocallyManagedUser');
+  };
+
   /**
    * Disables or hides some elements in Guest mode in ChromeOS.
    * All elements within given document with guest-visibility