Convert print_preview_handler.cc to IdentityManager

ProfileOAuth2TokenService is replaced with
PrimaryAccountAccessTokenFetcher. DeviceOAuth2TokenService is kept and
its usage inlined as per the discussion in https://crbug.com/907540.

Bug: 903857
Change-Id: Id242fd6885ca513bba557fabb2d2bfd7bda46511
Reviewed-on: https://chromium-review.googlesource.com/c/1402797
Reviewed-by: Sylvain Defresne <sdefresne@chromium.org>
Reviewed-by: Rebekah Potter <rbpotter@chromium.org>
Commit-Queue: Henrique Ferreiro <hferreiro@igalia.com>
Cr-Commit-Position: refs/heads/master@{#622297}
1 file changed