Never layer-ize RenderInlines.

Never layer-ize RenderInlines.

This removes support for opacity, filters and clip-path
on RenderInlines. If you want inline content that uses
these properties you need to use an inline-block. We
may want to add back support for opacity or filters
on inlines eventually, but we'd implement it differently
and right now they're getting in the way.

R=abarth@chromium.org

Committed: https://chromium.googlesource.com/external/mojo/+/952eb114ab0d01683e5bc41dd566a37e4a8f3978

[abarth-chromium, 2015-02-23 23:46:50]

abarth@chromium.org changed reviewers:
+ abarth@chromium.org

[abarth-chromium, 2015-02-23 23:46:51]

lgtm

[ojan, 2015-02-24 00:40:19]

Committed patchset #1 (id:1) manually as
952eb114ab0d01683e5bc41dd566a37e4a8f3978 (presubmit successful).