GitLab

- First CL to attempt to remove all uses of unsigned long long in blink.
- unsigned long long -> uint64_t.
- No logic changes (99% certain).

Bug: 929980
Change-Id: Ic655639bf98f18e187da34534d758cc432cf0b6f
Reviewed-on: https://chromium-review.googlesource.com/c/1461823Reviewed-by: Marijn Kruisselbrink <mek@chromium.org>
Reviewed-by: Victor Costan <pwnall@chromium.org>
Commit-Queue: Victor Costan <pwnall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#630632}