Increase packet limit in jitter buffer.

Increase packet limit in jitter buffer.

Especially the VP9 codec currently may overshoot bitrate target at sudden picture changes, resulting in frames over 800 packets.
This limit should be reduced again once the codec behaves.

BUG=webrtc:4889
Committed: https://crrev.com/907dcfd0e13b3ea82d8a2b042a1e9a266ef047d0
Cr-Commit-Position: refs/heads/master@{#9675}

[sprang_webrtc, 2015-08-04 15:03:23]

sprang@webrtc.org changed reviewers:
+ stefan@webrtc.org

[stefan-webrtc, 2015-08-04 15:10:50]

lgtm

[sprang_webrtc, 2015-08-04 15:11:14]

The CQ bit was checked by sprang@webrtc.org

[commit-bot: I haz the power, 2015-08-04 15:11:28]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1266353003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1266353003/1

[commit-bot: I haz the power, 2015-08-04 17:11:40]

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

[commit-bot: I haz the power, 2015-08-04 17:11:41]

Try jobs failed on following builders:
  mac_baremetal on tryserver.webrtc (JOB_TIMED_OUT, no build URL)

[sprang_webrtc, 2015-08-05 08:08:13]

The CQ bit was checked by sprang@webrtc.org

[commit-bot: I haz the power, 2015-08-05 08:08:18]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1266353003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1266353003/1

[commit-bot: I haz the power, 2015-08-05 08:09:14]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-08-05 08:09:24]

Patchset 1 (id:??) landed as
https://crrev.com/907dcfd0e13b3ea82d8a2b042a1e9a266ef047d0
Cr-Commit-Position: refs/heads/master@{#9675}