chrome/browser: Remove use of MessageLoopProxy and deprecated MessageLoop APIs

chrome/browser: Remove use of MessageLoopProxy and deprecated MessageLoop APIs

This patch was mostly autogenerated with https://codereview.chromium.org/1010073002/.

BUG=465354
Committed: https://crrev.com/0259835b7866b32d6ff36123914685c2d94410d4
Cr-Commit-Position: refs/heads/master@{#334147}

[Sami, 2015-06-08 18:40:19]

skyostil@chromium.org changed reviewers:
+ sky@chromium.org

[Sami, 2015-06-08 18:41:27]

Sorry for the huge patch but this is just mechanical refactoring and I've
already split out the biggest individual pieces. PTAL.

[sky, 2015-06-08 19:59:50]

I made it part way through this before my eyes glazed over. Rubber stamp LGTM

[Sami, 2015-06-10 16:11:04]

On 2015/06/08 19:59:50, sky wrote:
> I made it part way through this before my eyes glazed over. Rubber stamp LGTM

Thank you. Have some bleach: http://www.eyebleach.me/

[Sami, 2015-06-10 16:11:16]

The CQ bit was checked by skyostil@chromium.org

[Sami, 2015-06-10 16:11:17]

The patchset sent to the CQ was uploaded after l-g-t-m from sky@chromium.org
Link to the patchset: https://codereview.chromium.org/1143343005/#ps40001
(title: "Added some missing message_loop.h includes.")

[commit-bot: I haz the power, 2015-06-10 16:12:25]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1143343005/40001

[commit-bot: I haz the power, 2015-06-10 16:34:18]

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

[commit-bot: I haz the power, 2015-06-10 16:34:22]

Try jobs failed on following builders:
  linux_chromium_gn_rel on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[Sami, 2015-06-10 16:46:18]

The CQ bit was checked by skyostil@chromium.org

[commit-bot: I haz the power, 2015-06-10 16:47:15]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1143343005/40001

[commit-bot: I haz the power, 2015-06-10 17:31:19]

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

[commit-bot: I haz the power, 2015-06-10 17:31:22]

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

[Sami, 2015-06-10 17:50:34]

The CQ bit was checked by skyostil@chromium.org

[commit-bot: I haz the power, 2015-06-10 17:51:14]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1143343005/40001

[commit-bot: I haz the power, 2015-06-10 19:19:28]

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

[commit-bot: I haz the power, 2015-06-10 19:19:31]

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

[Sami, 2015-06-11 17:33:55]

The CQ bit was checked by skyostil@chromium.org

[commit-bot: I haz the power, 2015-06-11 17:37:10]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1143343005/40001

[commit-bot: I haz the power, 2015-06-11 19:48:54]

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

[commit-bot: I haz the power, 2015-06-11 19:48:56]

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_...)

[Sami, 2015-06-12 11:26:08]

The CQ bit was checked by skyostil@chromium.org

[Sami, 2015-06-12 11:26:08]

The patchset sent to the CQ was uploaded after l-g-t-m from sky@chromium.org
Link to the patchset: https://codereview.chromium.org/1143343005/#ps60001
(title: "Rebased.")

[commit-bot: I haz the power, 2015-06-12 11:26:40]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1143343005/60001

[commit-bot: I haz the power, 2015-06-12 12:37:39]

Committed patchset #4 (id:60001)

[commit-bot: I haz the power, 2015-06-12 12:38:31]

Patchset 4 (id:??) landed as
https://crrev.com/0259835b7866b32d6ff36123914685c2d94410d4
Cr-Commit-Position: refs/heads/master@{#334147}