Rebaseline 2 SVG tests after WK108429

This patch rebaselines svg/repaint after WK108429 and removes a stale
test expectations entry for svg/custom/text-ctm.

Unreviewed update of test expectations.

* platform/chromium-win/svg/repaint/svgsvgelement-repaint-children-expected.png: Added.
* platform/chromium-win/svg/repaint/svgsvgelement-repaint-children-expected.txt: Added.
* platform/chromium/TestExpectations:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@144245 268f45cc-cd09-0410-ab3c-d52691b4dbfc