Fix update of validity cache value, so that it reflects the correct state of any FormControlElement.

LayoutTests/fast/forms/number/number-validity-badinput-expected.txt

Index: LayoutTests/fast/forms/number/number-validity-badinput-expected.txt
diff --git a/LayoutTests/fast/forms/number/number-validity-badinput-expected.txt b/LayoutTests/fast/forms/number/number-validity-badinput-expected.txt
index 17357b9d4c4914d0f1ea3897fd1837e1d3603cb1..1c407e051ef40d2a4a0886b82c37a05d7699b56a 100644
--- a/LayoutTests/fast/forms/number/number-validity-badinput-expected.txt
+++ b/LayoutTests/fast/forms/number/number-validity-badinput-expected.txt
@@ -19,15 +19,22 @@ Type 'a' additionally. The element becomes badInput again.
 PASS colorOf(number) is invalidStyleColor
 PASS number.validity.badInput is true
 PASS number.value is ""
-The element losts focus. The element state should not be changed.
+The element looses focus. The element state should not be changed.
 PASS colorOf(number) is invalidStyleColor
 PASS number.validity.badInput is true
 PASS document.getSelection().toString() is "-1a"
 PASS number.value is ""
-The element losts a renderer. The element state should not be changed.
+The element looses renderer. The element state should not be changed.
 PASS number.style.display = "none"; number.validity.badInput is true
 A bad input should be cleared by value="".
 PASS number.value = ""; document.execCommand("SelectAll"); document.getSelection().toString() is ""
+badInput and checkValidty() should be updated by value= "some valid number"
+Type some text (invalid input)
+PASS number.validity.badInput is true
+PASS number.checkValidity() is false
+Now set a valid value
+PASS number.validity.badInput is false
+PASS number.checkValidity() is true
 PASS successfullyParsed is true
 
 TEST COMPLETE