Removed unused scrollbar pseudo classes.

Removed unused scrollbar pseudo classes.

::-webkit-scrollbar-back and ::-webkit-scrollbar-forward had PseudoType
constants, but the strings were not recognized and no other code for
handling them present.

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=183795

[Timothy Loh, 2014-10-16 00:37:21]

On 2014/10/15 18:12:32, rune wrote:

lgtm

[rune, 2014-10-16 07:47:25]

The CQ bit was checked by rune@opera.com

[commit-bot: I haz the power, 2014-10-16 07:48:28]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/659833002/1

[commit-bot: I haz the power, 2014-10-16 08:00:27]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-10-16 08:00:28]

Try jobs failed on following builders:
  android_chromium_gn_compile_rel on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/android_chromium_gn_comp...)

[rune, 2014-10-16 08:09:31]

The CQ bit was checked by rune@opera.com

[commit-bot: I haz the power, 2014-10-16 08:10:07]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/659833002/20001

[commit-bot: I haz the power, 2014-10-16 09:12:30]

Committed patchset #2 (id:20001) as 183795