Implement reportValidity()

LayoutTests/fast/forms/reportValidity-handler-updates-dom-expected.txt

Index: LayoutTests/fast/forms/reportValidity-handler-updates-dom-expected.txt
diff --git a/LayoutTests/fast/forms/reportValidity-handler-updates-dom-expected.txt b/LayoutTests/fast/forms/reportValidity-handler-updates-dom-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..561d5d9fe01cf31f9afde26425435ba758fbfc4c
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+++ b/LayoutTests/fast/forms/reportValidity-handler-updates-dom-expected.txt
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+ValidationMessageClient: main-message=Please fill out this field. sub-message=
+ValidationMessageClient: main-message=Please fill out this field. sub-message=
+ValidationMessageClient: main-message=Please fill out this field. sub-message=
+ValidationMessageClient: main-message=Please fill out this field. sub-message=
+HTMLFormElement::reportValidity() with cases that event handlers called by reportValidity() updates DOM structure.
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+The target form is removed.
+PASS $("f1").reportValidity() is false
+
+A control to be checked is removed.
+PASS $("f1").reportValidity() is false
+PASS handler2Called is false
+PASS document.activeElement is $("i1")
+
+A control that was checked was removed.
+PASS $("f1").reportValidity() is false
+PASS handler2Called is true
+PASS document.activeElement is $("i2")
+
+A new control is added.
+PASS $("f1").reportValidity() is false
+PASS handler2Called is false
+PASS document.activeElement is $("i1")
+
+A control is moved to another form.
+PASS $("f1").reportValidity() is false
+PASS handler2Called is false
+PASS document.activeElement is $("i1")
+
+A control is moved to another document.
+PASS $("f1").reportValidity() is true
+PASS successfullyParsed is true
+
+TEST COMPLETE
+