Reland of Make TrayDetailsView a ViewClickListener and ButtonListener

Reland of Make TrayDetailsView a ViewClickListener and ButtonListener

Reland of https://codereview.chromium.org/2289223002/.

Some initial changes in preparation for implementing
the material design version of the detailed views
in the Ash system menu:

* Make TrayDetailsView extend ViewClickListener
  and ButtonListener instead of having each of
  TrayDetailsView's subclasses extend these.
  The aim is to place common code in TrayDetailsView.

* Rename the TrayDetailsView "footer row" to be
  the "title row"; for material design this row
  appears at the top of the detailed view, not
  the bottom.

* For material design (--ash-md=experimental), show
  the title row at the top of the detailed view
  and do not instantiate or show any non-MD
  buttons in this row. Further improvements to
  the appearance and functionality of the title
  rows to be handled in subsequent CLs.

BUG=642136
TEST=ash_unittests

Committed: https://crrev.com/d3300aeaf3c505a3c7c8e9d79936efe0df60207a
Cr-Commit-Position: refs/heads/master@{#416312}

[tdanderson, 2016-09-02 15:44:24]

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

[commit-bot: I haz the power, 2016-09-02 15:44:49]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[tdanderson, 2016-09-02 15:46:59]

tdanderson@chromium.org changed reviewers:
+ oshima@chromium.org

[tdanderson, 2016-09-02 15:47:00]

Oshima, can you please take a look? The only change is in 
ash/common/system/tray/tray_details_view_unittest.cc (see my comment below).

https://codereview.chromium.org/2300423002/diff/20001/ash/common/system/tray/...
File ash/common/system/tray/tray_details_view_unittest.cc (left):

https://codereview.chromium.org/2300423002/diff/20001/ash/common/system/tray/...
ash/common/system/tray/tray_details_view_unittest.cc:199:
EXPECT_FALSE(view->hover());
This is the only change from Patch Set 5 in
https://codereview.chromium.org/2289223002/. Releasing the touch triggers a tap
on the title row, which transitions back to the default view, so |view| has been
destroyed.

[commit-bot: I haz the power, 2016-09-02 16:39:54]

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

[commit-bot: I haz the power, 2016-09-02 16:39:55]

Dry run: This issue passed the CQ dry run.

[oshima, 2016-09-02 18:52:31]

lgtm

[tdanderson, 2016-09-02 18:55:38]

The CQ bit was checked by tdanderson@chromium.org

[commit-bot: I haz the power, 2016-09-02 18:56:11]

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 19:05:04]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-09-02 19:08:24]

Description was changed from

==========
Reland of Make TrayDetailsView a ViewClickListener and ButtonListener

Reland of https://codereview.chromium.org/2289223002/.

Some initial changes in preparation for implementing
the material design version of the detailed views
in the Ash system menu:

* Make TrayDetailsView extend ViewClickListener
  and ButtonListener instead of having each of
  TrayDetailsView's subclasses extend these.
  The aim is to place common code in TrayDetailsView.

* Rename the TrayDetailsView "footer row" to be
  the "title row"; for material design this row
  appears at the top of the detailed view, not
  the bottom.

* For material design (--ash-md=experimental), show
  the title row at the top of the detailed view
  and do not instantiate or show any non-MD
  buttons in this row. Further improvements to
  the appearance and functionality of the title
  rows to be handled in subsequent CLs.

BUG=642136
TEST=ash_unittests
==========

to

==========
Reland of Make TrayDetailsView a ViewClickListener and ButtonListener

Reland of https://codereview.chromium.org/2289223002/.

Some initial changes in preparation for implementing
the material design version of the detailed views
in the Ash system menu:

* Make TrayDetailsView extend ViewClickListener
  and ButtonListener instead of having each of
  TrayDetailsView's subclasses extend these.
  The aim is to place common code in TrayDetailsView.

* Rename the TrayDetailsView "footer row" to be
  the "title row"; for material design this row
  appears at the top of the detailed view, not
  the bottom.

* For material design (--ash-md=experimental), show
  the title row at the top of the detailed view
  and do not instantiate or show any non-MD
  buttons in this row. Further improvements to
  the appearance and functionality of the title
  rows to be handled in subsequent CLs.

BUG=642136
TEST=ash_unittests

Committed: https://crrev.com/d3300aeaf3c505a3c7c8e9d79936efe0df60207a
Cr-Commit-Position: refs/heads/master@{#416312}
==========

[commit-bot: I haz the power, 2016-09-02 19:08:25]

Patchset 2 (id:??) landed as
https://crrev.com/d3300aeaf3c505a3c7c8e9d79936efe0df60207a
Cr-Commit-Position: refs/heads/master@{#416312}