make search box in settings page not get hidden behind enterprise warning

chrome/browser/resources/options2/browser_options.js

Index: chrome/browser/resources/options2/browser_options.js
diff --git a/chrome/browser/resources/options2/browser_options.js b/chrome/browser/resources/options2/browser_options.js
index 3148b622c985fac0d6b3ca8bfcd1825ae8be10d6..d4036395e9359dde92928e342019fc06eeed1483 100644
--- a/chrome/browser/resources/options2/browser_options.js
+++ b/chrome/browser/resources/options2/browser_options.js
@@ -233,6 +233,47 @@ cr.define('options', function() {
     },
 
     /**
+     * Updates managed banner visibility state. This function iterates over
+     * all input fields of all subpages and if any of these is marked as managed
+     * it triggers the managed banner to be visible.
+     * @private
+     */
+    updateManagedBannerVisibility_: function() {
+      var bannerDiv = $('managed-prefs-banner');
+
+      var controlledByPolicy = false;
+      var controlledByExtension = false;
+      var inputElements = document.querySelectorAll('input[controlled-by]');
+      var mainPages = document.querySelectorAll('#page-container .page');
+      for (var i = 0, len = inputElements.length; i < len; i++) {
+        if (inputElements[i].controlledBy == 'policy')
+          controlledByPolicy = true;
+        else if (inputElements[i].controlledBy == 'extension')
+          controlledByExtension = true;
+      }
+      if (!controlledByPolicy && !controlledByExtension) {
+        bannerDiv.hidden = true;
+        for (var i = 0; i < mainPages.length; i++)
+          mainPages[i].classList.remove('under-managed-prefs-banner');
+      } else {
+        bannerDiv.hidden = false;
+        for (var i = 0; i < mainPages.length; i++)
+          mainPages[i].classList.add('under-managed-prefs-banner');
+
+        if (controlledByPolicy && !controlledByExtension) {
+          $('managed-prefs-text').textContent =
+              templateData.policyManagedPrefsBannerText;
+        } else if (!controlledByPolicy && controlledByExtension) {
+          $('managed-prefs-text').textContent =
+              templateData.extensionManagedPrefsBannerText;
+        } else if (controlledByPolicy && controlledByExtension) {
+          $('managed-prefs-text').textContent =
+              templateData.policyAndExtensionManagedPrefsBannerText;
+        }
+      }
+    },
+
+    /**
      * Initializes a button for controlling screen brightness.
      * @param {string} id Button ID.
      * @param {string} callback Name of the callback function.
@@ -596,6 +637,7 @@ cr.define('options', function() {
     'updateAccountPicture',
     'updateAutocompleteSuggestions',
     'updateHomePageLabel',
+    'updateManagedBannerVisibility',
     'updateSearchEngines',
     'updateSyncState',
     'updateStartupPages',