Hover preview doesn´t support standardized css gradients!

[anselm-urban]

background: linear-gradient(to right, rgba(255,255,255,1) 0%,rgba(243,243,243,1) 50%,rgba(237,237,237,1) 51%,rgba(255,255,255,1) 100%);
^ When hovering this gradient, only the rgba colors show up in hover preview.

background: -webkit-linear-gradient(left, rgba(255,255,255,1) 0%,rgba(243,243,243,1) 50%,rgba(237,237,237,1) 51%,rgba(255,255,255,1) 100%);
^ This works fine.

[redmunds]

This is a known issue captured in #3458. Specifically, it's the "to" keyword that's not yet supported.

Chrome 26 supports rendering those gradients, but Brackets is still using a CEF3 version with Chrome 25. But, we should be upgrading soon.

Closing.