GitLab

Changes CrostiniAnsibleManagementService::Observer to reflect only start
and finish of container configuration. In all mocks states installation
and application are reflected as one - configuring so there is no need
to disctint them yet. Also renames functions the way it is clearly
reflected what happened so that classes that would implement
CrostiniAnsibleManagementService::Observer would have more
understandable methods (for example installer).

Test: browser_tests --gtest_filter="Crostini*"
Bug: 998097
Change-Id: I32ea22c96d8987c25dfc06557596ce43561bfa93
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1869416Reviewed-by: Nic Hollingum <hollingum@google.com>
Reviewed-by: Timothy Loh <timloh@chromium.org>
Commit-Queue: Olya Kalitova <okalitova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#708567}