Instead include it in the files that need to use it.

Change-Id: I2321f423ddcc1c0e779332c2e7d1a372bfb4ebbb
Reviewed-on: https://chromium-review.googlesource.com/1227305Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55964}