Migrate content/ files to histogram_macros.h includes.

Migrate content/ files to histogram_macros.h includes.

BUG=416479
TBR=jam@chromium.org

Committed: https://crrev.com/8d51e9d4c34378244b14d77da066d6eb84614ccd
Cr-Commit-Position: refs/heads/master@{#416399}

[Alexei Svitkine (slow), 2016-09-02 19:15:58]

Description was changed from

==========
Migrate content/ files to histogram_macros.h includes.

Also fixes one linter error that git cl upload warned me about in
gpu_mode_manager.cc

BUG=416479
==========

to

==========
Migrate content/ files to histogram_macros.h includes.

BUG=416479
==========

[Alexei Svitkine (slow), 2016-09-02 19:18:12]

Description was changed from

==========
Migrate content/ files to histogram_macros.h includes.

BUG=416479
==========

to

==========
Migrate content/ files to histogram_macros.h includes.

BUG=416479
TBR=jam@chromium.org
==========

[Alexei Svitkine (slow), 2016-09-02 19:18:34]

asvitkine@chromium.org changed reviewers:
+ isherman@chromium.org, jam@chromium.org

[Alexei Svitkine (slow), 2016-09-02 19:18:35]

isherman: PTAL
jam: TBR for content/ OWNERS, as this is a downstream change of base/metrics

[Alexei Svitkine (slow), 2016-09-02 19:59:59]

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

[commit-bot: I haz the power, 2016-09-02 20:00:22]

Dry run: 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, 2016-09-02 21:01:17]

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

[commit-bot: I haz the power, 2016-09-02 21:01:18]

Dry run: Try jobs failed on following builders:
  mac_chromium_rel_ng on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_...)

[Ilya Sherman, 2016-09-02 21:27:22]

The CQ bit was checked by isherman@chromium.org

[Ilya Sherman, 2016-09-02 21:27:22]

lgtm

[commit-bot: I haz the power, 2016-09-02 21:28:15]

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, 2016-09-02 23:56:00]

Description was changed from

==========
Migrate content/ files to histogram_macros.h includes.

BUG=416479
TBR=jam@chromium.org
==========

to

==========
Migrate content/ files to histogram_macros.h includes.

BUG=416479
TBR=jam@chromium.org
==========

[commit-bot: I haz the power, 2016-09-02 23:56:02]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-09-02 23:57:58]

Description was changed from

==========
Migrate content/ files to histogram_macros.h includes.

BUG=416479
TBR=jam@chromium.org
==========

to

==========
Migrate content/ files to histogram_macros.h includes.

BUG=416479
TBR=jam@chromium.org

Committed: https://crrev.com/8d51e9d4c34378244b14d77da066d6eb84614ccd
Cr-Commit-Position: refs/heads/master@{#416399}
==========

[commit-bot: I haz the power, 2016-09-02 23:57:59]

Patchset 1 (id:??) landed as
https://crrev.com/8d51e9d4c34378244b14d77da066d6eb84614ccd
Cr-Commit-Position: refs/heads/master@{#416399}