Test tidying: use "escape" and "backspace" with eventSender.keyDown()

LayoutTests/fast/forms/calendar-picker/calendar-picker-datetimelocal-with-step.html

Index: LayoutTests/fast/forms/calendar-picker/calendar-picker-datetimelocal-with-step.html
diff --git a/LayoutTests/fast/forms/calendar-picker/calendar-picker-datetimelocal-with-step.html b/LayoutTests/fast/forms/calendar-picker/calendar-picker-datetimelocal-with-step.html
index 61935f3eaba83d7b28c21bb6a2d6d500cddaaffd..763c8af2f44a860550b9fed4832eca3d2dd0224f 100644
--- a/LayoutTests/fast/forms/calendar-picker/calendar-picker-datetimelocal-with-step.html
+++ b/LayoutTests/fast/forms/calendar-picker/calendar-picker-datetimelocal-with-step.html
@@ -21,7 +21,7 @@ function test1() {
     shouldBeEqualToString('availableDayCells()', '2012-10-28,2012-11-01,2012-11-04,2012-11-08,2012-11-11,2012-11-15,2012-11-18,2012-11-22,2012-11-25,2012-11-29');
 
     // Close popup
-    eventSender.keyDown('\x1B');
+    eventSender.keyDown('escape');
     waitUntilClosing(test1AfterClose);
 }
 
@@ -34,7 +34,7 @@ function test2() {
     shouldBeEqualToString('availableDayCells()', '2012-10-30,2012-11-02,2012-11-06,2012-11-09,2012-11-13,2012-11-16,2012-11-20,2012-11-23,2012-11-27,2012-11-30');
 
     // Close popup
-    eventSender.keyDown('\x1B');
+    eventSender.keyDown('escape');
     waitUntilClosing(test2AfterClose);
 }
 
@@ -50,7 +50,7 @@ function test3() {
     shouldBeEqualToString('availableDayCells()', '2012-11-16,2012-11-20,2012-11-23,2012-11-27,2012-11-30');
 
     // Close popup
-    eventSender.keyDown('\x1B');
+    eventSender.keyDown('escape');
     waitUntilClosing(test3AfterClose);
 }