Previously, the mac version was under client/ and win under util/win/.
This cl brings them all together under util/misc/ and combines common
test code.
Bug: crashpad:30
Change-Id: Idf0d0158b969d5aa9802dfc8c21f73041b2bcc6c
Reviewed-on: https://chromium-review.googlesource.com/907755
Reviewed-by: Mark Mentovai <mark@chromium.org>
Commit-Queue: Joshua Peraza <jperaza@chromium.org>
