Don't move uneditable style and link elements during deletion

LayoutTests/editing/deleting/delete-uneditable-style.html

Index: LayoutTests/editing/deleting/delete-uneditable-style.html
diff --git a/LayoutTests/editing/deleting/delete-uneditable-style.html b/LayoutTests/editing/deleting/delete-uneditable-style.html
new file mode 100644
index 0000000000000000000000000000000000000000..f37c7a37e63e108fa5cfd23d57d25f916419f946
--- /dev/null
+++ b/LayoutTests/editing/deleting/delete-uneditable-style.html
@@ -0,0 +1,26 @@
+<script src="../../fast/js/resources/js-test-pre.js"></script>

[ojan, 2013/05/14 02:40:46]

Can you make this a dump-as-markup.js test instead? That way, it can show what
the result of the delete is in addition to just asserting that it doesn't crash.

[yosin_UTC9, 2013/05/14 04:20:31]

Done.

+<script>
+description('Test case of crash bug CR-177470');

[ojan, 2013/05/14 02:40:46]

Nit: An actual URL is preferable, i.e. http://crbug.com/177470 instead of "bug
CR-177470"

[yosin_UTC9, 2013/05/14 04:20:31]

Done.

+function $(id) { return document.getElementById(id); }
+
+window.addEventListener('load', function() {
+  var range = document.createRange();
+  range.setStart($('start'), NaN);
+  range.setEnd($('end'), NaN);
+  getSelection().addRange(range);
+  document.execCommand('delete', null, '');
+});
+</script>
+<div contentEditable id="test">
+  <span id="start">start</span>
+  editable-1
+  <div contentEditable="false">
+    <style>#end { color: red; }</style>
+    <link type="foo" href="bar">
+    uneditable
+  </div>
+  editable-2
+<span id="end">end</span>
+</div>
+<div id="log"></div>
+<script src="../../fast/js/resources/js-test-post.js"></script>