twbs/bootstrap — pull request #10893 by Shaun-Dychko (2013-09-30 20:30:57+00:00)
Title: remove comma separating the color and the color-stop in -webkit-linear-gradient in the #gradient .vertical mixin.

Before this pull request Chrome reports an "Invalid property value" for the -webkit-linear-gradient property, but after this pull request there is no error reported.