Stop generating ready and error events

Stop generating EME ready and error events

Since these events are no longer used by the unprefixed EME code,
there is no need to pass them to blink. Full removal will happen
when the prefixed EME code is removed.

BUG=418260
TEST=existing EME tests pass

Committed: https://crrev.com/bd184fd6cf0fe78f64d30ae9f17bf6e45714ec90
Cr-Commit-Position: refs/heads/master@{#302348}

[jrummell, 2014-10-30 21:18:11]

jrummell@chromium.org changed reviewers:
+ ddorwin@chromium.org, sandersd@chromium.org

[jrummell, 2014-10-30 21:18:12]

PTAL.

[ddorwin, 2014-10-31 21:49:50]

Please add EME to the first line of the description. Then LGTM.

[jrummell, 2014-10-31 21:57:27]

The CQ bit was checked by jrummell@chromium.org

[commit-bot: I haz the power, 2014-10-31 21:58:54]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/685373003/1

[commit-bot: I haz the power, 2014-10-31 23:22:34]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-10-31 23:23:15]

Patchset 1 (id:??) landed as
https://crrev.com/bd184fd6cf0fe78f64d30ae9f17bf6e45714ec90
Cr-Commit-Position: refs/heads/master@{#302348}