Implement Blink-in-JS for DOM methods

LayoutTests/fast/dom/private_script_unittest-expected.txt

Index: LayoutTests/fast/dom/private_script_unittest-expected.txt
diff --git a/LayoutTests/fast/dom/private_script_unittest-expected.txt b/LayoutTests/fast/dom/private_script_unittest-expected.txt
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+Unittests for private scripts.
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+This test needs window.internals.
+PASS internals.return123() is 123
+PASS internals.echoInteger(111) is 111
+PASS internals.echoString("foo") is "foo"
+PASS internals.addInteger(111, 222) is 333
+PASS internals.addString("foo", "bar") is "foobar"
+PASS internals.getIntegerFromPrototype() is 0
+PASS internals.getIntegerFromPrototype() is 123
+PASS internals.getIntegerFromDocument(document) is 0
+PASS internals.getIntegerFromDocument(document) is 123
+PASS internals.firstChild(node1) is node2
+PASS internals.nextSibling(node2) is node3
+PASS internals.nextSibling(node3) is node4
+PASS internals.nextSibling(node4) is null
+PASS internals.innerHTML(node5) is ""
+PASS internals.innerHTML(node5) is "<div>foo</div>"
+PASS internals.innerHTML(node6) is "foo"
+PASS internals.innerHTML(node7) is ""
+PASS internals.innerHTML(node7) is "clicked"
+PASS successfullyParsed is true
+
+TEST COMPLETE
+