drm_hwcomposer: Don't pass hwc_procs_t to VsyncWorker

Introduce a new class to limit the hwc_procs_t callback
structure scope to hwcomposer.cpp

Change-Id: I68ec62e7947ca87702b3d6d0169ae850cfbf5d85
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Robert Foss <robert.foss@collabora.com>
3 files changed