[code-health] Migrate crashpad PRESUBMIT.py to python3
[code-health] Migrate crashpad PRESUBMIT.py to python3

Bug: 1212081
Change-Id: Ibb90b861acb53655b33a67778f28a2d052698e18
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/2979473
Reviewed-by: Robert Sesek <f55ad94e336f3a28322d0a25d280221ea9daf7a3@chromium.org>
Commit-Queue: Robert Sesek <f55ad94e336f3a28322d0a25d280221ea9daf7a3@chromium.org>

chromium/crashpad,chromium/crashpad,chromium/crashpad