svg/hixie/perf has different repaint region in debug vs release

svg/hixie/perf has different repaint region in debug vs release
https://bugs.webkit.org/show_bug.cgi?id=78516

Reviewed by Hajime Morita.

Based on patch by Tony Chang <tony@chromium.org>.

The problem is the progress text in the lower right.  It says,
"Test in progress... X of 10".  Depending on how fast the test runs,
this text is never painted and the repaint region changes.  Disable
painting of the intermediate text and only include the final text.

Extended Tonys original patch to cover all svg/hixie/perf tests that
suffered from this issue - also avoid using setTimeout between the
individual steps, as we're only interessted in the final repaint
region, not the intermediate ones.

* platform/mac/svg/hixie/perf/001-expected.png:
* platform/mac/svg/hixie/perf/002-expected.png:
* platform/mac/svg/hixie/perf/003-expected.png:
* svg/hixie/perf/001.xml:
* svg/hixie/perf/002.xml:
* svg/hixie/perf/003.xml:
* svg/hixie/perf/004.xml:
* svg/hixie/perf/005.xml:
* svg/hixie/perf/006.xml:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@107698 268f45cc-cd09-0410-ab3c-d52691b4dbfc