commit ed9a981e1f5d2a600c2a25872aecbe4c73bf0d79
author Mikael Pessa <mikaelpessa@gmail.com> Fri Dec 21 15:22:06 2018 -0800
committer CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org> Wed Jan 16 23:57:57 2019 +0000
tree 68e4c66f9b5272e616e5478173cb22395f32c3b0
parent 272afbca2c658f3a26ed1f4f8e3c7d70ac90f1b5

[scenic] Simplified gfx::Session

Pulled all the ApplyCommand stuff out of session into it's own GfxCommandApplier class to make Session more readable, and simplified the destruction of SessionHandler, so that it's now a two-way dependency between SessionHandler and SessionManager instead of a three-way dependency involving Session.

Also removed the exposed reference to scenic from CommandDispatcherContext mentioned in SCN-808.

SCN-1194 #done
SCN-808 #comment

Test: fx build-push scenic_tests && fx run-test scenic_tests

And manually verified that
killall basemgr
didn't kill scenic and that launching
fx shell set_root_view fuchsia-pkg://fuchsia.com/noodles#meta/noodles.cmx
worked afterwards

Change-Id: I51631862e22dd4bebb13946343ccda52aee0c5ea