WebUI cr-search-field: Trigger event after programmatically clearing query.

chrome/test/data/webui/cr_elements/cr_toolbar_search_field_tests.js

Index: chrome/test/data/webui/cr_elements/cr_toolbar_search_field_tests.js
diff --git a/chrome/test/data/webui/cr_elements/cr_toolbar_search_field_tests.js b/chrome/test/data/webui/cr_elements/cr_toolbar_search_field_tests.js
index 1101688b10253dcb712c27d2a5c48f6dcc5fd633..257e35c8954d11b82feab1b2c138cd838e8b5949 100644
--- a/chrome/test/data/webui/cr_elements/cr_toolbar_search_field_tests.js
+++ b/chrome/test/data/webui/cr_elements/cr_toolbar_search_field_tests.js
@@ -74,6 +74,17 @@ cr.define('cr_toolbar_search_field', function() {
         assertEquals(['query1', '', 'query2'].join(), searches.join());
       });
 
+      test('notifies on setValue', function() {
+        MockInteractions.tap(field);
+        field.setValue('foo');
+        field.setValue('');
+        field.setValue('bar');
+        // Expecting identical query to be ignored.
+        field.setValue('bar');
+        field.setValue('baz');
+        assertEquals(['foo', '', 'bar', 'baz'].join(), searches.join());
+      });
+
       test('blur does not close field when a search is active', function() {
         MockInteractions.tap(field);
         simulateSearch('test');