Roll swarming_client @ 2808311e2ba2c19f268a58a2c0f81c967910d52f.

$ git log dd806d64..2808311e --date=short --format="%ad %ae %s" | sed 's/@chromium\.org//'
2014-03-13 maruel Add swarming.py query --dead-only.
2014-03-13 maruel tools/run_on_bots.py: runs tasks on all the swarming bots non-disruptively.
2014-03-13 maruel Remove 'os' for .isolated files.
2014-03-13 maruel Remove the 'else' conditions support from .isolate file.
2014-03-13 maruel Improve support for global variables in .isolate.
2014-03-13 maruel Preparatory work to improve .isolate global variables management.
2014-03-12 maruel Always prints dimensions unless --bare is passed.
2014-03-12 maruel Add swarming.py query.
2014-03-12 maruel Loosen the --dimension os <foo> requirement, and only require one dimension.

R=csharp@chromium.org
BUG=

Review URL: https://codereview.chromium.org/195993008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@257019 0039d316-1c4b-4281-b951-d872f2087c98
ui:: Add --ui-enable-map-image flag.

BUG=350737

Review URL: https://codereview.chromium.org/199403002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@257020 0039d316-1c4b-4281-b951-d872f2087c98
Update .DEPS.git

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@257021 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 257021
Implement wallpaper policy

BUG=220418
R=bshe@chromium.org (for ash_user_wallpaper_delegate.cc)
R=nkostylev@chromium.org (for chrome/browser/chromeos/login/*)
R=bartfab@chromium.org (for configuration_policy_handler_list_factory.cc)
R=jhawkins@chromium.org (for chrome/browser/resources/options/browser_options_handler.{cc,h})
R=dconnelly@chromium.org (for policy_template.json)
R=asvitkine@chromium.org (for histograms.xml)

Review URL: https://codereview.chromium.org/184223004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@257022 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 257022