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

LayoutTests/fast/forms/suggestion-picker/date-suggestion-picker-mouse-operations.html

Index: LayoutTests/fast/forms/suggestion-picker/date-suggestion-picker-mouse-operations.html
diff --git a/LayoutTests/fast/forms/suggestion-picker/date-suggestion-picker-mouse-operations.html b/LayoutTests/fast/forms/suggestion-picker/date-suggestion-picker-mouse-operations.html
index 4fa209a061c3cf819003c63bfaa3312166a20fce..39bc6d91876dc47735681e9a1919cb8bc37066c2 100644
--- a/LayoutTests/fast/forms/suggestion-picker/date-suggestion-picker-mouse-operations.html
+++ b/LayoutTests/fast/forms/suggestion-picker/date-suggestion-picker-mouse-operations.html
@@ -91,11 +91,11 @@ openPicker($('date'), test1);
 
 function test1() {
     debug('Check that page popup exists.');
-    shouldBe('popupWindow.pagePopupController.toString()', '"[object PagePopupController]"');
+    shouldBeEqualToString('popupWindow.pagePopupController.toString()', '[object PagePopupController]');
 
     debug('Check that hovering over an entry highlights it.');
     hoverOverElement(popupWindow.document.querySelector(".suggestion-list-entry:nth-child(2)"));
-    shouldBe('highlightedEntry()', '"2012-01-02"');
+    shouldBeEqualToString('highlightedEntry()', '2012-01-02');
 
     debug('Check that moving the mouse outside the popup de-highlights entries.');
     hoverOverElement(document.getElementById('description'));
@@ -108,7 +108,7 @@ function test1() {
 
 function test1AfterClosing() {
     shouldBeNull('$("mock-page-popup")');
-    shouldBe('document.getElementById("date").value', '"2012-01-03"');
+    shouldBeEqualToString('document.getElementById("date").value', '2012-01-03');
 
     openPicker($('date'), test2);
 }
@@ -132,7 +132,7 @@ function test2() {
     shouldBeTrue('scrollTopBeforeWheelEvent > scrollTopAfterWheelEvent');
 
     popupWindow.focus();
-    eventSender.keyDown('\x1B');
+    eventSender.keyDown('escape');
     waitUntilClosing(test2AfterClosing);
 }