Disable document mode.

Disable document mode.

* Removes the need for a command line flag to automatically
  migrate users to tabbed mode.

* Document mode code is kept in the repo, but there shouldn't be
  any way for the user to open new DocumentActivities.

* Disables all Document mode related tests _that start up Chrome_.
  DocumentTabModelImplTests, for example, still run because they
  don't start up Chrome.

BUG=582539
Committed: https://crrev.com/7b54c0e18c5e8b8b180c95d067797e36a23301db
Cr-Commit-Position: refs/heads/master@{#384997}

[gone, 2016-04-04 19:37:06]

dfalcantara@chromium.org changed reviewers:
+ tedchoc@chromium.org

[gone, 2016-04-04 19:55:31]

Description was changed from

==========
Kill document mode.

* Removes the need for a command line flag to automatically
  migrate users to tabbed mode.

* Document mode code is kept in the repo, but there shouldn't be
  any way for the user to open new DocumentActivities.

* Disables all Document mode related tests _that start up Chrome_.
  DocumentTabModelImplTests, for example, still run because they
  don't start up Chrome.

BUG=582539
==========

to

==========
Disable document mode.

* Removes the need for a command line flag to automatically
  migrate users to tabbed mode.

* Document mode code is kept in the repo, but there shouldn't be
  any way for the user to open new DocumentActivities.

* Disables all Document mode related tests _that start up Chrome_.
  DocumentTabModelImplTests, for example, still run because they
  don't start up Chrome.

BUG=582539
==========

[Ted C, 2016-04-04 20:21:29]

lgtm

[gone, 2016-04-04 20:25:16]

The CQ bit was checked by dfalcantara@chromium.org

[commit-bot: I haz the power, 2016-04-04 20:25:54]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1854253002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1854253002/20001

[commit-bot: I haz the power, 2016-04-04 20:45:01]

Description was changed from

==========
Disable document mode.

* Removes the need for a command line flag to automatically
  migrate users to tabbed mode.

* Document mode code is kept in the repo, but there shouldn't be
  any way for the user to open new DocumentActivities.

* Disables all Document mode related tests _that start up Chrome_.
  DocumentTabModelImplTests, for example, still run because they
  don't start up Chrome.

BUG=582539
==========

to

==========
Disable document mode.

* Removes the need for a command line flag to automatically
  migrate users to tabbed mode.

* Document mode code is kept in the repo, but there shouldn't be
  any way for the user to open new DocumentActivities.

* Disables all Document mode related tests _that start up Chrome_.
  DocumentTabModelImplTests, for example, still run because they
  don't start up Chrome.

BUG=582539
==========

[commit-bot: I haz the power, 2016-04-04 20:45:02]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-04-04 20:46:16]

Description was changed from

==========
Disable document mode.

* Removes the need for a command line flag to automatically
  migrate users to tabbed mode.

* Document mode code is kept in the repo, but there shouldn't be
  any way for the user to open new DocumentActivities.

* Disables all Document mode related tests _that start up Chrome_.
  DocumentTabModelImplTests, for example, still run because they
  don't start up Chrome.

BUG=582539
==========

to

==========
Disable document mode.

* Removes the need for a command line flag to automatically
  migrate users to tabbed mode.

* Document mode code is kept in the repo, but there shouldn't be
  any way for the user to open new DocumentActivities.

* Disables all Document mode related tests _that start up Chrome_.
  DocumentTabModelImplTests, for example, still run because they
  don't start up Chrome.

BUG=582539

Committed: https://crrev.com/7b54c0e18c5e8b8b180c95d067797e36a23301db
Cr-Commit-Position: refs/heads/master@{#384997}
==========

[commit-bot: I haz the power, 2016-04-04 20:46:17]

Patchset 2 (id:??) landed as
https://crrev.com/7b54c0e18c5e8b8b180c95d067797e36a23301db
Cr-Commit-Position: refs/heads/master@{#384997}