REGRESSION (r169024): Undetermined text is not displayed in the search field of Adobe Help Website
https://bugs.webkit.org/show_bug.cgi?id=137679
rdar://problem/18450335

Reviewed by Enrica Casucci.

Source/WebCore:

Test: platform/mac/editing/input/selected-composed-text-painting.html

* rendering/InlineTextBox.cpp: (WebCore::InlineTextBox::paint): We do not paint
selection beckground for unconfirmed text with underlines, so we should use a regular
style for text painting, as well.

LayoutTests:

* platform/mac/editing/input/selected-composed-text-painting-expected.html: Added.
* platform/mac/editing/input/selected-composed-text-painting.html: Added.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@174807 268f45cc-cd09-0410-ab3c-d52691b4dbfc
Update target platform to remove Leopard, Snow Leopard, Lion.
Add Yosemite. 
        
Unreviewed.

* BuildSlaveSupport/build.webkit.org-config/wkbuild.py:
(_should_file_trigger_build):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@174808 268f45cc-cd09-0410-ab3c-d52691b4dbfc