Remove unused HeaderIndexing class.

Remove unused HeaderIndexing class.

Review-Url: https://codereview.chromium.org/2846983003
Cr-Commit-Position: refs/heads/master@{#468143}
Committed: https://chromium.googlesource.com/chromium/src/+/ffb2c89561f3c70f5fa3291a1cd249af844315bc

[Bence, 2017-04-28 17:57:01]

The CQ bit was checked by bnc@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2017-04-28 17:57:48]

Dry run: CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[Bence, 2017-04-28 19:19:34]

bnc@chromium.org changed reviewers:
+ xunjieli@chromium.org

[Bence, 2017-04-28 19:19:34]

xunjieli: PTAL.  Thank you.

[xunjieli, 2017-04-28 19:40:53]

On 2017/04/28 19:19:34, Bence wrote:
> xunjieli: PTAL.  Thank you.

lgtm

[commit-bot: I haz the power, 2017-04-28 21:11:19]

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

[commit-bot: I haz the power, 2017-04-28 21:11:20]

Dry run: This issue passed the CQ dry run.

[Bence, 2017-04-28 21:39:56]

The CQ bit was checked by bnc@chromium.org

[commit-bot: I haz the power, 2017-04-28 21:40:35]

CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-04-28 21:46:20]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1493415596710940, "parent_rev":
"127c6abecca77a09866078eb781645ba9aea32d7", "commit_rev":
"ffb2c89561f3c70f5fa3291a1cd249af844315bc"}

[commit-bot: I haz the power, 2017-04-28 21:46:28]

Description was changed from

==========
Remove unused HeaderIndexing class.
==========

to

==========
Remove unused HeaderIndexing class.

Review-Url: https://codereview.chromium.org/2846983003
Cr-Commit-Position: refs/heads/master@{#468143}
Committed:
https://chromium.googlesource.com/chromium/src/+/ffb2c89561f3c70f5fa3291a1cd2...
==========

[commit-bot: I haz the power, 2017-04-28 21:46:29]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/ffb2c89561f3c70f5fa3291a1cd2...