This is copied from https://chromium-review.googlesource.com/639357
and should solve the psutil missing import problems
happening during Android test execution.

BUG=chromium:761720
NOTRY=True
TBR=fbarchard@chromium.org

Change-Id: I36c4febd6f2dcf6419dbc846ee4717b22e2525e6
Reviewed-on: https://chromium-review.googlesource.com/654600Reviewed-by: Henrik Kjellander <kjellander@chromium.org>
Commit-Queue: Henrik Kjellander <kjellander@chromium.org>