Fix Flush in DemuxerStreamAdapter.

Fix Flush in DemuxerStreamAdapter.

When the DemuxerStream has a pending read, this one
must be completed before invoking the flush callback.

BUG=408189
Committed: https://crrev.com/385df0994e1e8f7e802275f063ae68fae46ca718
Cr-Commit-Position: refs/heads/master@{#294669}

[damienv1, 2014-09-12 16:16:56]

damienv@chromium.org changed reviewers:
+ gunsch@chromium.org, lcwu@chromium.org

[lcwu1, 2014-09-12 16:53:59]

lgtm

[gunsch, 2014-09-12 17:12:34]

On 2014/09/12 16:53:59, lcwu1 wrote:
> lgtm

Any chance of a test to catch this?

[damienv1, 2014-09-12 20:35:08]

PTAL

[gunsch, 2014-09-12 21:03:00]

The CQ bit was checked by gunsch@chromium.org

[gunsch, 2014-09-12 21:03:02]

The CQ bit was unchecked by gunsch@chromium.org

[gunsch, 2014-09-12 21:03:05]

On 2014/09/12 20:35:08, damienv1 wrote:
> PTAL

lgtm

[lcwu1, 2014-09-12 21:13:32]

lgtm

[damienv1, 2014-09-12 21:13:55]

The CQ bit was checked by damienv@chromium.org

[commit-bot: I haz the power, 2014-09-12 21:24:10]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patchset/565973003/60001

[commit-bot: I haz the power, 2014-09-12 21:53:17]

Committed patchset #4 (id:60001) as 614562c2697ee2336bfa4f8694ab030250ca5eb5

[commit-bot: I haz the power, 2014-09-12 21:56:36]

Patchset 4 (id:??) landed as
https://crrev.com/385df0994e1e8f7e802275f063ae68fae46ca718
Cr-Commit-Position: refs/heads/master@{#294669}