Fix a test case failing on WK1 after r170296.

Fix a test case failing on WK1 after r170296.

There is now a non-visual render tree dump difference between WK1 and Wk2 results here due to wk1 requiring an additional style synchronization.

* platform/mac-wk2/editing/inserting: Added.
* platform/mac-wk2/editing/inserting/break-blockquote-after-delete-expected.txt: Copied from LayoutTests/platform/mac/editing/inserting/break-blockquote-after-delete-expected.txt.
* platform/mac/editing/inserting/break-blockquote-after-delete-expected.txt:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@170310 268f45cc-cd09-0410-ab3c-d52691b4dbfc