The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/e2d54b85fbc32bd0d19e1741677a296e25fd47c7

commit e2d54b85fbc32bd0d19e1741677a296e25fd47c7
Author: reveman <reveman@chromium.org>
Date: Thu Aug 25 00:30:38 2016

exo: Avoid creating transparent texture quads.

The surface is fully transparent when alpha is 0 and we can then
avoid to create a texture quad completely. Failing to do so
currently results in unnecessary compositing.

BUG= 640805 
TEST=exo_unittests

Review-Url: https://codereview.chromium.org/2277833004
Cr-Commit-Position: refs/heads/master@{#414220}

[modify] https://crrev.com/e2d54b85fbc32bd0d19e1741677a296e25fd47c7/components/exo/surface.cc

This change only effects ChromeOS devices with ARC++ and provides a critical performance improvement on those devices.

[Automated comment] Less than 2 weeks to go before stable on M53, manual review required.

Approving merge to M53 cros.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/8b50ca09664b21db2a2abb04d76199daf347b3bd

commit 8b50ca09664b21db2a2abb04d76199daf347b3bd
Author: David Reveman <reveman@chromium.org>
Date: Tue Aug 30 20:59:59 2016

exo: Avoid creating transparent texture quads.

The surface is fully transparent when alpha is 0 and we can then
avoid to create a texture quad completely. Failing to do so
currently results in unnecessary compositing.

BUG= 640805 
TEST=exo_unittests

Review-Url: https://codereview.chromium.org/2277833004
Cr-Commit-Position: refs/heads/master@{#414220}
(cherry picked from commit e2d54b85fbc32bd0d19e1741677a296e25fd47c7)

Review URL: https://codereview.chromium.org/2293223002 .

Cr-Commit-Position: refs/branch-heads/2785@{#794}
Cr-Branched-From: 68623971be0cfc492a2cb0427d7f478e7b214c24-refs/heads/master@{#403382}

[modify] https://crrev.com/8b50ca09664b21db2a2abb04d76199daf347b3bd/components/exo/surface.cc