Remove getComputedStyle(e).css* properties
Having deprecated the getComputedStyle(e).css* properties, this patch
removes the capability completely. Affected tests are updated (and the
deprecation-specific test is removed), and the UseCounter is removed
since it is no longer needed.
BUG=
413205
Committed:
https://crrev.com/b7e1bea8744c389a7e28fc798be3ce40ba189a3d
Cr-Commit-Position: refs/heads/master@{#370215}