Replace gfx::ScopedSkRegion with scoped_ptr<SkRegion>.

Replace gfx::ScopedSkRegion with scoped_ptr<SkRegion>.

BUG=
TEST=


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=150742

[Junmin Zhu, 2012-08-08 13:40:02]

replace gfx::ScopedSkRegion with general scoped_ptr<SkRegion>.

Please kindly review the patch. Thanks.

[Ben Goodger (Google), 2012-08-08 21:30:42]

lgtm

[commit-bot: I haz the power, 2012-08-09 00:28:29]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/junmin.zhu@intel.com/10827218/1

[commit-bot: I haz the power, 2012-08-09 02:19:47]

Try job failure for 10827218-1 (retry) (retry) (retry) on linux_rel for step
"nacl_integration".
It's a second try, previously, step "nacl_integration" failed.
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=linux_rel&...

[commit-bot: I haz the power, 2012-08-09 02:33:25]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/junmin.zhu@intel.com/10827218/1

[commit-bot: I haz the power, 2012-08-09 03:23:50]

Try job failure for 10827218-1 (retry) on mac_rel for step "check_deps".
It's a second try, previously, step "check_deps" failed.
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=mac_rel&nu...

[commit-bot: I haz the power, 2012-08-09 03:45:24]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/junmin.zhu@intel.com/10827218/1

[commit-bot: I haz the power, 2012-08-09 05:22:29]

Change committed as 150742