Make more computed style helpers return values by PassRef.
authorakling@apple.com <akling@apple.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc>
Wed, 18 Dec 2013 15:05:49 +0000 (15:05 +0000)
committerakling@apple.com <akling@apple.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc>
Wed, 18 Dec 2013 15:05:49 +0000 (15:05 +0000)
commitb63ba1906347c0c02f39de4ad655fe9061322ee0
tree97d890853a96ceed94077075d39bd4e86590aa6e
parentc04f884b9feb78634880a9c78198b07cedff5226
Make more computed style helpers return values by PassRef.
<https://webkit.org/b/125923>

Tighten yet another handful of CSS computed style helper functions
to return their CSSValues by PassRef where we never return null.

Reviewed by Antti Koivisto.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@160765 268f45cc-cd09-0410-ab3c-d52691b4dbfc
Source/WebCore/ChangeLog
Source/WebCore/css/CSSComputedStyleDeclaration.cpp