Update contents to use attachment broker.

Update content/ to use new attachment broker interface.

Now that more of the attachment broker API has been finalized, update content/
to correctly set up and use attachment brokers.

BUG=493414
Committed: https://crrev.com/1bfccba17a0828045671935031c8dcdf636e42e2
Cr-Commit-Position: refs/heads/master@{#341254}

[erikchen, 2015-07-29 01:22:25]

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

[commit-bot: I haz the power, 2015-07-29 01:23:21]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1260053003/60001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1260053003/60001

[commit-bot: I haz the power, 2015-07-29 01:52:14]

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

[commit-bot: I haz the power, 2015-07-29 01:52:14]

Dry run: Try jobs failed on following builders:
  win_chromium_x64_rel_ng on tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_x64_...)

[erikchen, 2015-07-29 17:49:26]

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

[commit-bot: I haz the power, 2015-07-29 17:51:14]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1260053003/80001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1260053003/80001

[commit-bot: I haz the power, 2015-07-29 18:29:52]

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

[commit-bot: I haz the power, 2015-07-29 18:29:53]

Dry run: Try jobs failed on following builders:
  win_chromium_rel_ng on tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_rel_...)
  win_chromium_x64_rel_ng on tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_x64_...)

[erikchen, 2015-07-29 20:12:15]

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

[commit-bot: I haz the power, 2015-07-29 20:12:51]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1260053003/100001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1260053003/100001

[commit-bot: I haz the power, 2015-07-29 21:33:44]

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

[commit-bot: I haz the power, 2015-07-29 21:33:45]

Dry run: This issue passed the CQ dry run.

[erikchen, 2015-07-30 17:24:01]

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

[commit-bot: I haz the power, 2015-07-30 17:24:35]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1260053003/120001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1260053003/120001

[erikchen, 2015-07-30 17:24:39]

erikchen@chromium.org changed reviewers:
+ avi@chromium.org

[erikchen, 2015-07-30 17:24:40]

avi: Please review.

https://codereview.chromium.org/1260053003/diff/100001/content/public/common/...
File content/public/common/child_process_host.h (right):

https://codereview.chromium.org/1260053003/diff/100001/content/public/common/...
content/public/common/child_process_host.h:11: #include
"ipc/attachment_broker_privileged.h"
Some consumers want an IPC::AttachmentBroker, while others want
IPC::AttachmentBrokerPrivileged. Adding this include exposes the class
hierarchy, which means that consumers can implicitly downcast
AttachmentBrokerPrivileged to AttachmentBroker without having to explicitly
include this header.

[commit-bot: I haz the power, 2015-07-30 17:37:40]

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

[commit-bot: I haz the power, 2015-07-30 17:37:41]

Dry run: Try jobs failed on following builders:
  android_chromium_gn_compile_dbg on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/android_chromiu...)
  cast_shell_linux on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/cast_shell_linu...)
  linux_chromium_gn_rel on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[erikchen, 2015-07-30 17:53:32]

erikchen@chromium.org changed reviewers:
- avi@chromium.org

[Avi (use Gerrit), 2015-07-30 19:09:35]

avi@chromium.org changed reviewers:
+ avi@chromium.org

[Avi (use Gerrit), 2015-07-30 19:09:35]

lgtm

[erikchen, 2015-07-31 00:08:13]

The CQ bit was checked by erikchen@chromium.org

[commit-bot: I haz the power, 2015-07-31 00:08:55]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1260053003/120001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1260053003/120001

[commit-bot: I haz the power, 2015-07-31 01:09:44]

Committed patchset #7 (id:120001)

[commit-bot: I haz the power, 2015-07-31 01:10:23]

Patchset 7 (id:??) landed as
https://crrev.com/1bfccba17a0828045671935031c8dcdf636e42e2
Cr-Commit-Position: refs/heads/master@{#341254}