[Qt] Implement textZoomIn() and textZoomOut() in DRT's EventSender, add results

[Qt] Implement textZoomIn() and textZoomOut() in DRT's EventSender, add results
for passing new tests and unskip the passing ones from the Skipped list.
https://bugs.webkit.org/show_bug.cgi?id=35159

Reviewed by Kenneth Rohde Christiansen.

WebKitTools:

* DumpRenderTree/qt/EventSenderQt.cpp:
(EventSender::textZoomIn):
(EventSender::textZoomOut):
* DumpRenderTree/qt/EventSenderQt.h:

LayoutTests:

* platform/qt/Skipped: unskip passing tests
* platform/qt/svg/custom/text-zoom-expected.txt: Added.
* platform/qt/svg/zoom: Added.
* platform/qt/svg/zoom/page: Added.
* platform/qt/svg/zoom/page/absolute-sized-document-no-scrollbars-expected.txt: Added.
* platform/qt/svg/zoom/page/absolute-sized-document-scrollbars-expected.txt: Added.
* platform/qt/svg/zoom/page/relative-sized-document-scrollbars-expected.txt: Added.
* platform/qt/svg/zoom/page/zoom-foreignObject-expected.txt: Added.
* platform/qt/svg/zoom/page/zoom-hixie-mixed-008-expected.txt: Added.
* platform/qt/svg/zoom/page/zoom-hixie-mixed-009-expected.txt: Added.
* platform/qt/svg/zoom/page/zoom-hixie-rendering-model-004-expected.txt: Added.
* platform/qt/svg/zoom/page/zoom-svg-float-border-padding-expected.txt: Added.
* platform/qt/svg/zoom/text: Added.
* platform/qt/svg/zoom/text/absolute-sized-document-no-scrollbars-expected.txt: Added.
* platform/qt/svg/zoom/text/absolute-sized-document-scrollbars-expected.txt: Added.
* platform/qt/svg/zoom/text/relative-sized-document-scrollbars-expected.txt: Added.
* platform/qt/svg/zoom/text/zoom-foreignObject-expected.txt: Added.
* platform/qt/svg/zoom/text/zoom-hixie-mixed-008-expected.txt: Added.
* platform/qt/svg/zoom/text/zoom-hixie-mixed-009-expected.txt: Added.
* platform/qt/svg/zoom/text/zoom-hixie-rendering-model-004-expected.txt: Added.
* platform/qt/svg/zoom/text/zoom-svg-float-border-padding-expected.txt: Added.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@55019 268f45cc-cd09-0410-ab3c-d52691b4dbfc