GitLab

This CL moves trusted vault crypto functions to a dedicated header,
because they were used in multiple files and it leads to code and
constants duplicates.

Bug: 1113598
Change-Id: I5450a1ec0f9836471c5e5d3669e7cd2173527d29
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2565510Reviewed-by: Mikel Astiz <mastiz@chromium.org>
Commit-Queue: Maksim Moskvitin <mmoskvitin@google.com>
Cr-Commit-Position: refs/heads/master@{#832309}