Add automated test for the edit search engine dialog.

chrome/browser/resources/edit_search_engine_dialog.js

Index: chrome/browser/resources/edit_search_engine_dialog.js
diff --git a/chrome/browser/resources/edit_search_engine_dialog.js b/chrome/browser/resources/edit_search_engine_dialog.js
index 0d9cdb375966bb2343c7f488b399d1e0e2922773..1c3fca023d35b872819873e58d52e2edfad1ca55 100644
--- a/chrome/browser/resources/edit_search_engine_dialog.js
+++ b/chrome/browser/resources/edit_search_engine_dialog.js
@@ -6,6 +6,14 @@ cr.define('editSearchEngineDialog', function() {
   'use strict';
 
   /**
+   * Flag inidicating if we are in the process of validating input. While
+   * validating, the validity of the inputs is indeterminate.
+   * @type {boolean}
+   * @private
+   */
+  var isValidating_ = false;
+
+  /**
    * Disables the controls while the dialog is busy.
    */
   function disableControls() {
@@ -50,16 +58,20 @@ cr.define('editSearchEngineDialog', function() {
    * by calling setValidation.
    */
   function validate() {
+    isValidating_ = true;
     chrome.send('requestValidation', [$('description-text').value,
                 $('keyword-text').value, $('url-text').value]);
   }
 
   /**
    * Sets dialog state given the results of the validation of input by Chrome.
-   * @param {{description: boolean, details: boolean, url: boolean, ok:boolean}}
-   *     details A dictionary of booleans indicating the validation results of
-   *     various parts of the UI.  |description|, |details| and |url| indicate
-   *     the validity of the respective text fields, and |ok| indicates whether
+   * @param {{description: boolean,
+              keyword: boolean,
+              url: boolean,
+              ok: boolean}} details
+   *     A dictionary of booleans indicating the validation results of various
+   *     parts of the UI.  |description|, |keyword| and |url| indicate the
+   *     validity of the respective text fields, and |ok| indicates whether
    *     the OK/Save button can be pressed.
    */
   function setValidation(details) {
@@ -67,6 +79,7 @@ cr.define('editSearchEngineDialog', function() {
     setValidImage($('keyword-icon'), details.keyword);
     setValidImage($('url-icon'), details.url);
     $('save').disabled = !details.ok;
+    isValidating_ = false;
   }
 
   /**
@@ -108,12 +121,25 @@ cr.define('editSearchEngineDialog', function() {
     setValidation({description: false, keyword: false, url: false});
     if (cr.isViews)
       forEach(document.querySelectorAll('.button-strip'), reverseChildren);
-    chrome.send('requestDetails')
+    // Mark that we are in the process of validating, since the 'send' call
+    // is asynchronous.  Until the next call to 'setValidation' complete, the
+    // validity of the inputs is in an indeterminate state.
+    isValidating_ = true;
+    chrome.send('requestDetails');
+  }
+
+  /**
+   * Indicates if we are in the process of validating input.
+   * @return {boolean} True if validation is in progress.
+   */
+  function isValidating() {
+    return isValidating_;
   }
 
   document.addEventListener('DOMContentLoaded', initialize);
 
   return {
+    isValidating: isValidating,
     setDetails: setDetails,
     setValidation: setValidation,
   };