Add extra crash logging for starting the sink with no frames.

Add extra crash logging for starting the sink with no frames.

Crash on the compositor thread is too late to debug effectively,
so cause crashes earlier.

BUG=485324
TEST=none
TBR=xhwang

Committed: https://crrev.com/707ffafaa4635ce560dc6f3cc0d909c6d7e8618c
Cr-Commit-Position: refs/heads/master@{#330026}

[DaleCurtis, 2015-05-15 01:02:36]

The CQ bit was checked by dalecurtis@chromium.org

[commit-bot: I haz the power, 2015-05-15 01:03:54]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1145553002/1

[commit-bot: I haz the power, 2015-05-15 02:43:32]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-05-15 02:44:18]

Patchset 1 (id:??) landed as
https://crrev.com/707ffafaa4635ce560dc6f3cc0d909c6d7e8618c
Cr-Commit-Position: refs/heads/master@{#330026}