Remove Text.replaceWholeText()

LayoutTests/fast/storage/storage-detached-iframe.html

Index: LayoutTests/fast/storage/storage-detached-iframe.html
diff --git a/LayoutTests/fast/storage/storage-detached-iframe.html b/LayoutTests/fast/storage/storage-detached-iframe.html
index 060d425b3eaa071a44d8ddcd49eca1ffdfc2fb97..d3031367ff17d5b013714bcdcb7ab62edfc9199a 100644
--- a/LayoutTests/fast/storage/storage-detached-iframe.html
+++ b/LayoutTests/fast/storage/storage-detached-iframe.html
@@ -17,8 +17,8 @@
           t1.outerText = "";
           t1.src = undefined;
           first_attr = t1.attributes.item(undefined, undefined, undefined, undefined);
-          first_attr_value_replaced = first_attr.firstChild.replaceWholeText(undefined, undefined, undefined, undefined);

[chrishtr, 2014/11/18 18:43:52]

Was this testing something useful? Looks weird.

[philipj_slow, 2014/11/18 19:02:52]

It is weird. This is obviously a fuzzer test case and maybe it wasn't
sufficiently minimized. It's from https://trac.webkit.org/changeset/87114 which
is too old to go back and try to reproduce and re-minimize. Instead I replaced
it by something equivalent by stepping in replaceWholeText and seeing which
paths were taken.

-          first_attr_value_replaced.DOCUMENT_FRAGMENT_NODE = a;
+          first_attr.firstChild.data = undefined;
+          first_attr.firstChild.DOCUMENT_FRAGMENT_NODE = a;
           try {
               first_attr.firstChild.DOCUMENT_FRAGMENT_NODE.localStorage.fuzz3_visited="test";
           } catch (e) {