MD Settings: Allow empty passwords when importing certificate.

chrome/test/data/webui/settings/certificate_manager_page_test.js

Index: chrome/test/data/webui/settings/certificate_manager_page_test.js
diff --git a/chrome/test/data/webui/settings/certificate_manager_page_test.js b/chrome/test/data/webui/settings/certificate_manager_page_test.js
index 8002bf576fb9ac337803c772a22b8e37bf359f3a..d583895150fa89fbba5bc6c4d45c615d0dbc42a5 100644
--- a/chrome/test/data/webui/settings/certificate_manager_page_test.js
+++ b/chrome/test/data/webui/settings/certificate_manager_page_test.js
@@ -440,14 +440,13 @@ cr.define('certificate_manager_page', function() {
         var passwordInputElement =
             Polymer.dom(dialog.$.dialog).querySelector('paper-input');
         assertTrue(dialog.$.dialog.open);
-        assertTrue(dialog.$.ok.disabled);
 
-        // Test that the 'OK' button is disabled when the password field is
+        // Test that the 'OK' button is enabled even when the password field is
         // empty.
-        triggerInputEvent(passwordInputElement);
-        assertTrue(dialog.$.ok.disabled);
+        assertEquals('', passwordInputElement.value);
+        assertFalse(dialog.$.ok.disabled);
+
         passwordInputElement.value = 'foopassword';
-        triggerInputEvent(passwordInputElement);
         assertFalse(dialog.$.ok.disabled);
 
         // Simulate clicking 'OK'.