Handle the "key" field as opposed to keyIdentifier field.

third_party/WebKit/LayoutTests/fast/forms/datetimelocal-multiple-fields/datetimelocal-multiple-fields-ax-aria-attributes.html

Index: third_party/WebKit/LayoutTests/fast/forms/datetimelocal-multiple-fields/datetimelocal-multiple-fields-ax-aria-attributes.html
diff --git a/third_party/WebKit/LayoutTests/fast/forms/datetimelocal-multiple-fields/datetimelocal-multiple-fields-ax-aria-attributes.html b/third_party/WebKit/LayoutTests/fast/forms/datetimelocal-multiple-fields/datetimelocal-multiple-fields-ax-aria-attributes.html
index cc69301999d45cdd0b07f54f1c2bfc562f0424f8..38634439f37e8d6158d2dc972768fd2183a7741c 100644
--- a/third_party/WebKit/LayoutTests/fast/forms/datetimelocal-multiple-fields/datetimelocal-multiple-fields-ax-aria-attributes.html
+++ b/third_party/WebKit/LayoutTests/fast/forms/datetimelocal-multiple-fields/datetimelocal-multiple-fields-ax-aria-attributes.html
@@ -38,28 +38,28 @@ else {
     shouldBeEqualToString('focusedFieldValueDescription()', 'AM/PM, AXValueDescription: PM, 1, 2');
 
     debug('Empty value');
-    eventSender.keyDown('\b');
+    eventSender.keyDown('Backspace');
     shouldBeEqualToString('focusedFieldValueDescription()', 'AM/PM, AXValueDescription: blank, 1, 2');
     eventSender.keyDown('\t', ['shiftKey']);
-    eventSender.keyDown('\b');
+    eventSender.keyDown('Backspace');
     shouldBeEqualToString('focusedFieldValueDescription()', 'Milliseconds, AXValueDescription: blank, 0, 999');
     eventSender.keyDown('\t', ['shiftKey']);
-    eventSender.keyDown('\b');
+    eventSender.keyDown('Backspace');
     shouldBeEqualToString('focusedFieldValueDescription()', 'Seconds, AXValueDescription: blank, 0, 59');
     eventSender.keyDown('\t', ['shiftKey']);
-    eventSender.keyDown('\b');
+    eventSender.keyDown('Backspace');
     shouldBeEqualToString('focusedFieldValueDescription()', 'Minutes, AXValueDescription: blank, 0, 59');
     eventSender.keyDown('\t', ['shiftKey']);
-    eventSender.keyDown('\b');
+    eventSender.keyDown('Backspace');
     shouldBeEqualToString('focusedFieldValueDescription()', 'Hours, AXValueDescription: blank, 1, 12');
     eventSender.keyDown('\t', ['shiftKey']);
-    eventSender.keyDown('\b');
+    eventSender.keyDown('Backspace');
     shouldBeEqualToString('focusedFieldValueDescription()', 'Year, AXValueDescription: blank, 1, 275760');
     eventSender.keyDown('\t', ['shiftKey']);
-    eventSender.keyDown('\b');
+    eventSender.keyDown('Backspace');
     shouldBeEqualToString('focusedFieldValueDescription()', 'Day, AXValueDescription: blank, 1, 31');
     eventSender.keyDown('\t', ['shiftKey']);
-    eventSender.keyDown('\b');
+    eventSender.keyDown('Backspace');
     shouldBeEqualToString('focusedFieldValueDescription()', 'Month, AXValueDescription: blank, 1, 12');
 
     debug('');