[css3-text] Implement text-decoration property shorthand

LayoutTests/TestExpectations

Index: LayoutTests/TestExpectations
diff --git a/LayoutTests/TestExpectations b/LayoutTests/TestExpectations
index d9155136a1fc1c2a01a6b3eec9539cf0937d8bcc..ac3dbef75f058993386fe8dd3838755654187bf9 100644
--- a/LayoutTests/TestExpectations
+++ b/LayoutTests/TestExpectations
@@ -263,6 +263,9 @@ webkit.org/b/100985 media/progress-events-generated-correctly.html [ Failure Pas
 # CSS3 Text support is not yet enabled for all properties (must replace CSS3_TEXT with a runtime flag).
 webkit.org/b/112755 fast/css3-text/css3-text-indent/text-indent-each-line.html [ ImageOnlyFailure ]
 
+# Needs rebaseline after text-decoration shorthand property implementation
+crbug.com/165462 fast/css3-text/css3-text-decoration/repaint/repaint-text-decoration-line.html [ NeedsRebaseline ]

[Julien - ping for review, 2013/07/30 22:37:22]

Could you explain why this test needs a rebaseline after this change? (I would
have expected it to be orthogonal to more decoration changes)

[abinader, 2013/07/31 21:24:03]

Yes, you are right about preserving behavior. However, I found out we were doing
it wrong on a specific test:
(1) assign "text-decoration: <non-initial valid value(s)>" then
(2) set element.style.textDecorationLine = "";

This should clear the property value back to initial value (none), but isn't
currently being properly done. FWIW, I've checked Firefox's behavior which also
does the same (resets the property value back to initial).

+
 # We expect V8 to crash in an orderly fashion instead of throwing a JavaScript out-of-memory error.
 webkit.org/b/103348 fast/js/string-replacement-outofmemory.html [ Crash ]