Disallow squashing for layers with reflections

Disallow squashing for layers with reflections

We're not smart enough to draw reflections into squashing layers. Instead,
these layers need to be separately composited so we can set up the reflection
layer correctly.

BUG=391022
R=esprehn@chromium.org

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=177432

[esprehn, 2014-07-02 21:28:05]

lgtm

[abarth-chromium, 2014-07-02 21:38:50]

The CQ bit was checked by abarth@chromium.org

[commit-bot: I haz the power, 2014-07-02 21:39:16]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/abarth@chromium.org/367163003/1

[abarth-chromium, 2014-07-02 21:39:34]

The CQ bit was unchecked by abarth@chromium.org

[abarth-chromium, 2014-07-02 21:47:01]

The CQ bit was checked by abarth@chromium.org

[commit-bot: I haz the power, 2014-07-02 21:47:17]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/abarth@chromium.org/367163003/20001

[chrishtr, 2014-07-02 22:01:28]

lgtm

[commit-bot: I haz the power, 2014-07-02 22:51:48]

Change committed as 177432