cc: Stop passing the occlusion explicitly to UpdateTiles.

cc: Stop passing the occlusion explicitly to UpdateTiles.

The occlusion is a draw property, the layer can access it from there
like other draw properties.

Cleanup CL since moving occlusion to draw properties.

R=enne
BUG=446751
Committed: https://crrev.com/83c3d4a861627992abf7a42c7c02163f416add23
Cr-Commit-Position: refs/heads/master@{#316355}

[enne (OOO), 2015-02-14 00:33:27]

The CQ bit was checked by enne@chromium.org

[enne (OOO), 2015-02-14 00:33:28]

lgtm

[commit-bot: I haz the power, 2015-02-14 00:33:44]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/924143005/1

[commit-bot: I haz the power, 2015-02-14 00:40:53]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-02-14 00:40:54]

Try jobs failed on following builders:
  linux_chromium_gn_chromeos_rel on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)
  linux_chromium_gn_dbg on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[danakj, 2015-02-14 00:51:35]

New patchsets have been uploaded after l-g-t-m from enne@chromium.org

[danakj, 2015-02-14 00:51:38]

The CQ bit was checked by danakj@chromium.org

[commit-bot: I haz the power, 2015-02-14 00:53:08]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/924143005/20001

[commit-bot: I haz the power, 2015-02-14 01:43:07]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-02-14 01:44:11]

Patchset 2 (id:??) landed as
https://crrev.com/83c3d4a861627992abf7a42c7c02163f416add23
Cr-Commit-Position: refs/heads/master@{#316355}