Presentation API: Blink changes to allow getAvailability() to be rejected.

Presentation API: Blink changes to allow getAvailability() to be rejected.

This is adding a AvailabilityNotSupported error in PresentationError.

It is also refactoring some callback code to be in sync with
CallbackPromiseAdapter. As a consequence, PresentationSession::dispose()
has been removed.

BUG=507295
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=198394

[mlamouri (slow - plz ping), 2015-07-06 17:06:59]

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

[whywhat, 2015-07-06 17:14:02]

lgtm

[mark a. foltz, 2015-07-06 19:49:03]

lgtm

Can you update the description to include the removal of
PresentationSession::dispose()?

[mlamouri (slow - plz ping), 2015-07-06 19:53:08]

On 2015/07/06 at 19:49:03, mfoltz wrote:
> lgtm
> 
> Can you update the description to include the removal of
PresentationSession::dispose()?

Done.

Note that this is not landing because it depends on other CLs to land before.

[mlamouri (slow - plz ping), 2015-07-07 10:32:42]

The CQ bit was checked by mlamouri@chromium.org

[commit-bot: I haz the power, 2015-07-07 10:32:57]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1212423003/1

[commit-bot: I haz the power, 2015-07-07 12:03:52]

Committed patchset #1 (id:1) as
https://src.chromium.org/viewvc/blink?view=rev&revision=198394