[Autofill] Use UploadCardSource in GetDetails requests

This CL moves from using MigrationSource (which was only applicable to
local card migration) to the new UploadCardSource enum (which applies to
both local card migration and normal card upload scenarios).

Bug: 909782
Change-Id: Ieef04c38b405bcb3fc17cbbb90a2ad66852c8c1e
Reviewed-on: https://chromium-review.googlesource.com/c/1377870
Reviewed-by: Sebastien Seguin-Gagnon <sebsg@chromium.org>
Commit-Queue: Jared Saul <jsaul@google.com>
Cr-Commit-Position: refs/heads/master@{#616792}
9 files changed