[SPV2] Support touch action rects in composite-after-paint

This patch implements touch-action rects in composite-after-paint by
generalizing the ScrollingCoordinator UpdateLayerTouchActionRects
function to work with both SPV1 and SPV2.

Several tests are failing due to cc::Layer::position being zero,
though the touch-action rects are correct. Expectation entries have
been added for these.

This patch also reorders some lines in internals.h. This was found in
the review of http://crrev.com/611376 but was mistakenly left out when
the patch landed.

Bug: 909749

Change-Id: I9d66ebdfef25d46388ce5740121a7b4844de1ca5
Reviewed-on: https://chromium-review.googlesource.com/c/1351802
Commit-Queue: Philip Rogers <pdr@chromium.org>
Reviewed-by: Xianzhu Wang <wangxianzhu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#611785}
6 files changed