Fix cc::Layer debug name

Fix cc::Layer debug name

Have ui::Layer subclass cc::LayerClient and register itself as the
client of the cc::Layer it is using. This allows the names for the
layers appear in debugging output.

BUG=280662
TEST=Built version of chrome that dumps debug information about layers
     and confirmed the missing layer names are now present.

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=220477

[rharrison, 2013-08-28 19:43:18]

vollick: This is the CL we were discussing yesterday

danakj: vollick is on vacation, but he said he would review this. If you get a
chance to look at it before him that would be appreciated.

[danakj, 2013-08-28 19:45:31]

LGTM

[commit-bot: I haz the power, 2013-08-29 13:50:04]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/rharrison@chromium.org/23701005/1

[commit-bot: I haz the power, 2013-08-29 19:05:30]

Retried try job too often on win7_aura for step(s) browser_tests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=win7_aura&...

[commit-bot: I haz the power, 2013-08-29 19:14:34]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/rharrison@chromium.org/23701005/1

[commit-bot: I haz the power, 2013-08-30 02:13:34]

Change committed as 220477