win: Fix crashpad_util_test ProcessInfo.Handles
win: Fix crashpad_util_test ProcessInfo.Handles

This new test from 7de04b02f85d was failing on Windows 10. I started by
adding the hint, which produced â€œCreateFileMapping: Access is denied.
(0x5)â€. Switching the â€œGlobal\â€ to â€œLocal\â€ fixes the test for me.

TEST=crashpad_util_test ProcessInfo.Handles
R=scottmg@chromium.org

Review URL: https://codereview.chromium.org/1407993003 .

chromium/crashpad,atom/crashpad,chromium/crashpad,atom/crashpad,chromium/crashpad,atom/crashpad