Hovered/active/focused will never share style with siblings/cousins.

Hovered/active/focused will never share style with siblings/cousins.

For any given hovered/active node at a given time, other hovered/active nodes
are either ancestors or descendants of that node. Since style sharing is
looking at siblings and cousins, hovered/active nodes will never share style.

Similarly, there's always a single focused element in a document, hence it
will never share style with another node.

BUG=255189
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=153773

[rune, 2013-07-05 12:32:34]

New attempt since the first CL[1] was reverted because it used a JS API for
hovering only available in the WebKit performance testing framework.

Testing :focus this time since it's possible to trigger without a non-standard
API.

[1] https://codereview.chromium.org/18089009/

[rune, 2013-07-05 12:34:17]

On 2013/07/05 12:32:34, rune wrote:
> New attempt since the first CL[1] was reverted because it used a JS API for
> hovering only available in the WebKit performance testing framework.

And I've tested locally with tools/perf/run_measurement this time.

[eae, 2013-07-08 15:32:14]

LGTM

[commit-bot: I haz the power, 2013-07-09 10:41:16]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/rune@opera.com/18764003/1

[commit-bot: I haz the power, 2013-07-09 10:44:30]

Change committed as 153773