Move all core files in //components/sessions into core/ subdir

Move all core files in //components/sessions into core/ subdir

//components/sessions has many core files living in the top-level directory of
the component. This CL moves all the core files to live in
//components/sessions/core to match the conventional structure of a layered
component.

TBR=finnur,droger

BUG=371476
NOPRESUBMIT=true

Committed: https://crrev.com/47c6d8a6957fae50ec6550325ff816da202f04c5
Cr-Commit-Position: refs/heads/master@{#350529}

[blundell, 2015-09-22 13:27:23]

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

[blundell, 2015-09-22 13:27:24]

Hi Scott,

Not TBR'ing this just on the off chance that there was some reason for the
separation between the top-level and the core/ subdirectory. The CL was created
just by "git mv" followed by "mass-rename.py", so feel free to rubberstamp if
you have no problems with the concept.

[sky, 2015-09-22 16:39:07]

I don't think there was a good reason not to combine as you have here. Rubber
stamp LGTM

[blundell, 2015-09-24 07:30:15]

blundell@chromium.org changed reviewers:
+ droger@chromium.org, finnur@chromium.org

[blundell, 2015-09-24 07:30:32]

TBR=finnur for //extensions
TBR=droger for //ios

[blundell, 2015-09-24 07:30:42]

The CQ bit was checked by blundell@chromium.org

[commit-bot: I haz the power, 2015-09-24 07:31:22]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1361613002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1361613002/1

[commit-bot: I haz the power, 2015-09-24 07:35:12]

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

[commit-bot: I haz the power, 2015-09-24 07:35:14]

Try jobs failed on following builders:
  cast_shell_linux on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/cast_shell_linu...)
  linux_chromium_chromeos_ozone_rel_ng on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)
  ios_dbg_simulator_ninja on tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/ios_dbg_simulator...)
  mac_chromium_compile_dbg_ng on tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_comp...)
  mac_chromium_rel_ng on tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_...)

[blundell, 2015-09-24 08:43:40]

The CQ bit was checked by blundell@chromium.org

[blundell, 2015-09-24 08:43:41]

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/1361613002/#ps20001
(title: "Rebase")

[commit-bot: I haz the power, 2015-09-24 08:44:20]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1361613002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1361613002/20001

[commit-bot: I haz the power, 2015-09-24 08:55:28]

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

[commit-bot: I haz the power, 2015-09-24 08:55:29]

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

[blundell, 2015-09-24 10:05:34]

Adding NOPRESUBMIT=true to work around a complaint about using ScopedAllowIO()
which is in pre-existing code.

[blundell, 2015-09-24 10:06:13]

The CQ bit was checked by blundell@chromium.org

[commit-bot: I haz the power, 2015-09-24 10:06:46]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1361613002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1361613002/20001

[commit-bot: I haz the power, 2015-09-24 11:06:58]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-09-24 11:07:50]

Patchset 2 (id:??) landed as
https://crrev.com/47c6d8a6957fae50ec6550325ff816da202f04c5
Cr-Commit-Position: refs/heads/master@{#350529}

[Finnur, 2015-09-24 13:20:06]

Extensions LGTM