Fix compilation of image_decode_bench.

This binary was broken by me but left unnoticed because no bot executes
it. This test is simple and CreateMainThreadAndInitialize() would
suffice.

Bug: 826203
Change-Id: Icdf9e3941be862abbedc20086ee909447c28645f
Reviewed-on: https://chromium-review.googlesource.com/1206753
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Reviewed-by: Alexander Timin <altimin@chromium.org>
Commit-Queue: Yuta Kitamura <yutak@chromium.org>
Cr-Commit-Position: refs/heads/master@{#590176}
1 file changed