Replace deprecated scoped_array<T> with scoped_ptr<T[]>

BUG=chromium:338610
TEST=`emerge-link touch_noise_filter`

Change-Id: I81bb9f6f32639f5fb771bfb4193b6632c6b552ea
Reviewed-on: https://chromium-review.googlesource.com/184057
Tested-by: Ben Chan <benchan@chromium.org>
Reviewed-by: Andrew de los Reyes <adlr@chromium.org>
Commit-Queue: Ben Chan <benchan@chromium.org>
1 file changed