Add UpdateBehavior argument for Element Focus functions

We have many focus functions that can be overriden and used in blink:
SupportsFocus(), IsFocusable(), IsKeyboardFocusable(),
IsFocusableStyle(). When calling these functions from accessibility
code, we should not trigger an update to layout/style.

This CL adds the enum UpdateBehavior to Element with the default value
kStyleAndLayout to update the style/layout and kNoneForAccessibility
which should only be passed by a11y code to avoid any layout/style
update.

This change also refactors related CL:
https://chromium-review.googlesource.com/c/chromium/src/+/5008754

Change-Id: I2a1f6b92bed390ec14313ba34b1ac9298527486f
Bug: 1492703, 1489580, 1499038
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5028713
Reviewed-by: David Baron <dbaron@chromium.org>
Commit-Queue: Di Zhang <dizhangg@chromium.org>
Reviewed-by: Chris Harrelson <chrishtr@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1226385}