Fix TrackRunIterator to generate a parse error when it encounters a reserved dependency value.

Fix TrackRunIterator to generate a parse error when it encounters a reserved dependency value.

Replaces a CHECK() with a parser error when reserved "depends on" values
appear in the sample flags.

BUG=410404
TESTS=TrackRunIteratorTest.SampleInfoTest_ReservedInSampleFlags,
 TrackRunIteratorTest.SampleInfoTest_ReservedInDefaultSampleFlags

Committed: https://crrev.com/272aec140085ca6ad9cdc0a505ca93c494e34776
Cr-Commit-Position: refs/heads/master@{#293596}

[acolwell GONE FROM CHROMIUM, 2014-09-03 20:14:54]

acolwell@chromium.org changed reviewers:
+ scherkus@chromium.org

[scherkus (not reviewing), 2014-09-03 22:41:45]

OOC did you mean bug 408552 or bug 410404?

also as an FYI YouTube seems to be generating this content, or at least hitting
the CHECK()

[acolwell GONE FROM CHROMIUM, 2014-09-03 23:19:33]

On 2014/09/03 22:41:45, scherkus wrote:
> OOC did you mean bug 408552 or bug 410404?
Oops. I meant 410404.

> 
> also as an FYI YouTube seems to be generating this content, or at least
hitting
> the CHECK()
Yeah I know. I figured that was a follow up issue.

[scherkus (not reviewing), 2014-09-03 23:20:23]

lgtm

[acolwell GONE FROM CHROMIUM, 2014-09-03 23:22:12]

The CQ bit was checked by acolwell@chromium.org

[commit-bot: I haz the power, 2014-09-03 23:24:16]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/acolwell@chromium.org/540503003/1

[commit-bot: I haz the power, 2014-09-04 02:27:49]

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

[commit-bot: I haz the power, 2014-09-04 02:27:50]

Try jobs failed on following builders:
  android_clang_dbg_recipe on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/android_clang_d...)

[acolwell GONE FROM CHROMIUM, 2014-09-05 23:58:21]

The CQ bit was checked by acolwell@chromium.org

[commit-bot: I haz the power, 2014-09-06 00:00:06]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/acolwell@chromium.org/540503003/1

[commit-bot: I haz the power, 2014-09-06 00:46:57]

Committed patchset #1 (id:1) as b44ec086026c9b44ece39a554638159f0b5562bc

[commit-bot: I haz the power, 2014-09-10 03:42:01]

Patchset 1 (id:??) landed as
https://crrev.com/272aec140085ca6ad9cdc0a505ca93c494e34776
Cr-Commit-Position: refs/heads/master@{#293596}