Add tests for control characters being rendered visibly

Add tests for control characters being rendered visibly
https://bugs.webkit.org/show_bug.cgi?id=149142

Reviewed by Alexey Proskuryakov.

According to [1] and [2], all browsers are migrating to rendering control characters. This patch
adds tests for this behavior. Because we do not implement the behavior yet [3], these tests are
marked as failing.

[1] http://logs.csswg.org/irc.w3.org/css/2015-02-08/#e520447
[2] https://lists.w3.org/Archives/Public/www-style/2015Sep/0076.html
[3] https://bugs.webkit.org/show_bug.cgi?id=149128

* platform/efl/TestExpectations:
* platform/gtk/TestExpectations:
* platform/ios-simulator/TestExpectations:
* platform/mac/TestExpectations:
* fast/text/control-characters/visible-control-characters-1-expected-mismatch.html: Added.
* fast/text/control-characters/visible-control-characters-1.html: Added.
* fast/text/control-characters/visible-control-characters-2-expected-mismatch.html: Added.
* fast/text/control-characters/visible-control-characters-2.html: Added.
* fast/text/control-characters/visible-control-characters-3-expected-mismatch.html: Added.
* fast/text/control-characters/visible-control-characters-3.html: Added.
* fast/text/control-characters/visible-control-characters-2-expected-mismatch.xhtml: Added.
* fast/text/control-characters/visible-control-characters-2.xhtml: Added.
* fast/text/control-characters/visible-control-characters-3-expected-mismatch.xhtml: Added.
* fast/text/control-characters/visible-control-characters-3.xhtml: Added.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@189769 268f45cc-cd09-0410-ab3c-d52691b4dbfc