Update compositing/RTL tests to fail if the root layer is shifted incorrectly
https://bugs.webkit.org/show_bug.cgi?id=85820

Reviewed by James Robinson.

For the Chromium port, if the root layer was shifted incorrectly, the
non-composited red indicator layers would get drawn outside the root
layers bounds, making it impossible to see if the test was failing.

Also turn off overflow:hidden because compositing/ tests have mock
scrollbars. This makes it much easier to debug these tests locally.

* compositing/rtl/rtl-absolute-expected.png:
* compositing/rtl/rtl-absolute-overflow-expected.png:
* compositing/rtl/rtl-absolute-overflow-expected.txt:
* compositing/rtl/rtl-absolute-overflow-scrolled-expected.png:
* compositing/rtl/rtl-absolute-overflow-scrolled-expected.txt:
* compositing/rtl/rtl-absolute-overflow-scrolled.html:
* compositing/rtl/rtl-absolute-overflow.html:
* compositing/rtl/rtl-absolute.html:
* compositing/rtl/rtl-fixed-expected.png:
* compositing/rtl/rtl-fixed-overflow-expected.png:
* compositing/rtl/rtl-fixed-overflow-expected.txt:
* compositing/rtl/rtl-fixed-overflow-scrolled-expected.png:
* compositing/rtl/rtl-fixed-overflow-scrolled-expected.txt:
* compositing/rtl/rtl-fixed-overflow-scrolled.html:
* compositing/rtl/rtl-fixed-overflow.html:
* compositing/rtl/rtl-fixed.html:
* compositing/rtl/rtl-iframe-absolute-overflow-expected.png:
* compositing/rtl/rtl-iframe-absolute-overflow-expected.txt:
* compositing/rtl/rtl-iframe-absolute-overflow-scrolled-expected.png:
* compositing/rtl/rtl-iframe-absolute-overflow-scrolled-expected.txt:
* compositing/rtl/rtl-iframe-fixed-overflow-expected.png:
* compositing/rtl/rtl-iframe-fixed-overflow-expected.txt:
* compositing/rtl/rtl-iframe-fixed-overflow-scrolled-expected.png:
* compositing/rtl/rtl-iframe-fixed-overflow-scrolled-expected.txt:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@116560 268f45cc-cd09-0410-ab3c-d52691b4dbfc
25 files changed