[views-ax] Move transformation of bounds to screen-relative bounds

This CL moves the transformation of bounds
(from parent relative to screen relative) for a ViewAccessibility
from ViewAccessibility::GetAccessibleNodeData to the
AXViewObjectWrapper::Serialize and to wherever they're used in
ViewAXPlatformNodeDelegate.

This doesn't have perf implications since Serialize was calling
GetAccessibleNodeData anyway.

The reason for this change is so that we can keep the bounds
cached in the AXNodeData member for ViewAccessibility updated
whenever they change (will be done in a follow up CL) rather than
being computed

This could not be done if we moved the transformation to whenever the bounds changed on the view, since this transformation often involves
an OS call that can be expensive.

This also is in-line with what the other object wrappers are doing,
which they do this transformation in their override for Serialize.


This CL is part of the ViewsAX project:
https://docs.google.com/document/d/1Ku7HOyDsiZem1yaV6ccZ-tz3lO2XR2NEcm8HjR6d-VY/edit#heading=h.ke1u3utej413

Bug: 325137417

Change-Id: Ida527ab737ae63c63230e2b58e1c40586e4367f7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5602030


Reviewed-by: Benjamin Beaudry <benjamin.beaudry@microsoft.com>
Commit-Queue: Javier Contreras <javiercon@microsoft.com>
Cr-Commit-Position: refs/heads/main@{#1313667}