cc: Make FixedPositionWithInterveningRenderSurface use property trees
cc: Make FixedPositionWithInterveningRenderSurface use property trees

Previously it was looking at draw_transform which doesn't get filled in
on the main thread by property trees.

Once main thread CDP is removed, Layer::draw_transform can do this work,
and this can be reverted.

R=weiliangc@chromium.org
BUG=502041
CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel

Review URL: https://codereview.chromium.org/1295203002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#343802}

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