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1. Set all props for CRTC, Connector and Plane to Plane Manager to Commit.
2. Maintain a consolidated path to modeset both Atomic and Legacy.
3. Simplify CRTC Controller by removing all modeset operations and maintain its state from PlaneManager::CrtcState.
4. This makes all CRTCs on the same hardware display controller to be modeset at the same time.

BUG=1082882,1015104
TEST=hardware_display_plane_manager_unittest

Change-Id: I2401a1b40ce74158416484e6418239d5fb8c1c25
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2429586
Commit-Queue: Mark Yacoub <markyacoub@google.com>
Reviewed-by: Daniel Nicoara <dnicoara@chromium.org>
Cr-Commit-Position: refs/heads/master@{#814933}