Presentation API: cleanup leftovers from .getAvailability() changes.

Presentation API: cleanup leftovers from .getAvailability() changes.

This is part of a suite of three CLs:
1. https://codereview.chromium.org/1222623003
2. https://codereview.chromium.org/1214083013
3. <this>

BUG=498435
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=198387

[mlamouri (slow - plz ping), 2015-07-02 16:42:34]

mlamouri@chromium.org changed reviewers:
+ avayvod@chromium.org

[whywhat, 2015-07-02 22:43:17]

lgtm

[mlamouri (slow - plz ping), 2015-07-07 08:45:32]

The CQ bit was checked by mlamouri@chromium.org

[commit-bot: I haz the power, 2015-07-07 08:45:48]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1220813009/1

[commit-bot: I haz the power, 2015-07-07 08:48:49]

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

[commit-bot: I haz the power, 2015-07-07 08:48:50]

Try jobs failed on following builders:
  android_blink_compile_dbg on tryserver.blink (JOB_FAILED,
http://build.chromium.org/p/tryserver.blink/builders/android_blink_compile_db...)
  android_blink_compile_rel on tryserver.blink (JOB_FAILED,
http://build.chromium.org/p/tryserver.blink/builders/android_blink_compile_re...)
  linux_blink_rel on tryserver.blink (JOB_FAILED,
http://build.chromium.org/p/tryserver.blink/builders/linux_blink_rel/builds/6...)

(exceeded global retry quota)

[mlamouri (slow - plz ping), 2015-07-07 09:20:00]

The CQ bit was checked by mlamouri@chromium.org

[mlamouri (slow - plz ping), 2015-07-07 09:20:00]

The patchset sent to the CQ was uploaded after l-g-t-m from avayvod@chromium.org
Link to the patchset: https://codereview.chromium.org/1220813009/#ps20001
(title: "rebase")

[commit-bot: I haz the power, 2015-07-07 09:20:21]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1220813009/20001

[commit-bot: I haz the power, 2015-07-07 10:29:44]

Committed patchset #2 (id:20001) as
https://src.chromium.org/viewvc/blink?view=rev&revision=198387