Queue notification center deletes while visible to the user.

This extends the notification center queueing system to support deletes.
Formerly they would just pass through to the views, causing re-rendering
artifacts.

R=jianli@chromium.org
TBR=oshima@chromium.org,stevenjb@chromium.org,benwells@chromium.org
BUG=267066

Review URL: https://chromiumcodereview.appspot.com/24258004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@224931 0039d316-1c4b-4281-b951-d872f2087c98
Automated Commit: Committing new LKGM version 4730.0.0 for chromeos.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@224932 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 224931
SVN changes up to revision 224932
importer: Do not show the "Choose file" button while loading the dialog.

BUG=290769
TEST=1- Launch chrome and open the 'Import bookmarks and settings' overlay
(chrome://settings/importData).
     2- Observe that "Import" button is visible and disabled while the dialog is
loading the profile list.
     3- Observe that "Choose file" is not visible anymore.
R=dubroy@chromium.org

Review URL: https://chromiumcodereview.appspot.com/24281005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@224933 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 224933
Migrate DBus service constants from flimflam namespace to shill namespace.

All shill DBus service constants have been moved from the flimflam namespace to
the shill namespace. This CL makes the corresponding changes on the Chrome
side.

Related CLs:
  https://chromium-review.googlesource.com/#/c/170123/
  https://chromium-review.googlesource.com/#/c/170205/
  https://chromium-review.googlesource.com/#/c/170206/
  https://chromium-review.googlesource.com/#/c/170207/
  https://chromium-review.googlesource.com/#/c/170208/
  https://chromium-review.googlesource.com/#/c/170209/
  https://chromium-review.googlesource.com/#/c/170223/
  https://chromium-review.googlesource.com/#/c/170230/
  https://chromium-review.googlesource.com/#/c/170231/

BUG=295425
R=stevenjb@chromium.org

Review URL: https://chromiumcodereview.appspot.com/24286008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@224934 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 224934