Replace deprecated scoped_array<T> with scoped_ptr<T[]> BUG=chromium:338610 TEST=Build and run unit tests. Change-Id: If124895f42c5a5de9f86d301e748e08efc0e2381 Reviewed-on: https://chromium-review.googlesource.com/184081 Reviewed-by: Darren Krahn <[email protected]> Commit-Queue: Ben Chan <[email protected]> Tested-by: Ben Chan <[email protected]>