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* The size and scale factor in Display and DisplayInfo could be different
 in the past, but they're now always the same, except for the unified
 desktop mode.

* panel_rotation() was added recently so use it instead of
DisplayInfo::GetLogicalActiveRotation();
 ImageCursor can get the panel's orientation from display and
   no need to create a fake display.

Bug: None
Test: No functional change. All tests passes.
Change-Id: I1a3dd26f96dd201eefcd58841e185eed6ab514ff
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1994672Reviewed-by: Scott Violet <sky@chromium.org>
Reviewed-by: Zentaro Kavanagh <zentaro@chromium.org>
Commit-Queue: Mitsuru Oshima (slow in TOK) <oshima@chromium.org>
Cr-Commit-Position: refs/heads/master@{#737123}