Remove scoped_array references in src/gpu

Remove scoped_array references in src/gpu

scoped_array is deprecated in favor of scoped_ptr[]
as of https://codereview.chromium.org/14081006

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=272731

[Zhenyao Mo, 2014-05-23 19:45:14]

LGTM

[Shannon Woods, 2014-05-23 22:37:17]

The CQ bit was checked by shannonwoods@chromium.org

[commit-bot: I haz the power, 2014-05-23 22:38:44]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/shannonwoods@chromium.org/291893010/1

[commit-bot: I haz the power, 2014-05-24 06:06:05]

FYI, CQ is re-trying this CL (attempt #1).
Please consider checking whether the failures are real,
and report flakes to chrome-troopers@google.com.
The failing builders are:
  android_dbg_triggered_tests on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_dbg_triggered...)
  mac_chromium_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/mac_chromium_rel/buil...)

[commit-bot: I haz the power, 2014-05-24 13:04:18]

Change committed as 272731