Adding "Clear hosted app data" checkbox to browsing data removal UI.

chrome/browser/resources/options2/clear_browser_data_overlay.js

Index: chrome/browser/resources/options2/clear_browser_data_overlay.js
diff --git a/chrome/browser/resources/options2/clear_browser_data_overlay.js b/chrome/browser/resources/options2/clear_browser_data_overlay.js
index 50b3baf2fcbfc7ccb8e95fe240b8ec7d21291ad4..72be1ddf1da735f8395a77fa75e5ace85bea5374 100644
--- a/chrome/browser/resources/options2/clear_browser_data_overlay.js
+++ b/chrome/browser/resources/options2/clear_browser_data_overlay.js
@@ -36,6 +36,7 @@ cr.define('options', function() {
                    'browser.clear_data.cookies',
                    'browser.clear_data.passwords',
                    'browser.clear_data.form_data',
+                   'browser.clear_data.hosted_apps_data',
                    'browser.clear_data.content_licenses'];
       types.forEach(function(type) {
           Preferences.getInstance().addEventListener(type, f);
@@ -52,6 +53,7 @@ cr.define('options', function() {
         ClearBrowserDataOverlay.dismiss();
       };
       $('clearBrowserDataCommit').onclick = function(event) {
+        ClearBrowserDataOverlay.setClearingState(true);
         chrome.send('performClearBrowserData');
       };
     },
@@ -81,9 +83,11 @@ cr.define('options', function() {
     $('deleteCookiesCheckbox').disabled = state;
     $('deletePasswordsCheckbox').disabled = state;
     $('deleteFormDataCheckbox').disabled = state;
+    $('deleteHostedAppsDataCheckbox').disabled = state;
     $('deauthorizeContentLicensesCheckbox').disabled = state;
     $('clearBrowserDataTimePeriod').disabled = state;
     $('cbdThrobber').style.visibility = state ? 'visible' : 'hidden';
+    $('clearBrowserDataDismiss').disabled = state;
 
     if (state)
       $('clearBrowserDataCommit').disabled = true;