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This patch adds zcr_vsync_feedback_v1 support to wayland clients.
It additionally adds a new CL flag "--log-vsync-timing-updates"
to wayland_simple_client that can be used to print on the std output
updates on vsync timing information.

Test:
  build wayland_simple_client,
  scp to dut and run
  'export XDG_RUNTIME_DIR=/var/run/chrome; ./wayland_simple_client --log-vsync-timing-updates'

Change-Id: Idcb13cf2e4cc9357cf454de6a8416da3b089eab4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1580469Reviewed-by: kylechar <kylechar@chromium.org>
Commit-Queue: kylechar <kylechar@chromium.org>
Commit-Queue: Daniele Castagna <dcastagna@chromium.org>
Auto-Submit: Daniele Castagna <dcastagna@chromium.org>
Cr-Commit-Position: refs/heads/master@{#654870}