GitLab

Add a field to NigoriSpecifics (part of the Sync protocol) to signify
the derivation method used to derive the key from a user's custom
passphrase.

Add accompanying enum which enumerates the possible options. Currently,
only one such method is available.

Also enable detection of the case when the method is not known, e.g.
when an old client tries to access data committed and encrypted by a new
client using a new key derivation method.

TBRing dschuyler@ for chrome/browser/webui/settings/people_handler.cc
because the change is a trivial file rename change.

TBR=dschuyler@chromium.org

Bug: 876297
Change-Id: I7b603664a152f4999c8e0a3e1453b3edf611649a
Reviewed-on: https://chromium-review.googlesource.com/1183667
Commit-Queue: David Davidović <davidovic@google.com>
Reviewed-by: Marc Treib <treib@chromium.org>
Reviewed-by: vitaliii <vitaliii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#586285}