Change  mojo demo apps to use Application.

BUG=None
R=darin@chromium.org, ben

Review URL: https://codereview.chromium.org/162213002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251076 0039d316-1c4b-4281-b951-d872f2087c98
Mojo: Rename public/tests/test_support.* -> test_utils.*.

I'm planning on reusing the name test_support for something slightly
different: a dynamic library that can thunk to an implementation
provided by the test runner (much like we do for system and gles2). This
is so we can remove public/tests's base dependency (by injecting it
instead).

R=sky@chromium.org

Review URL: https://codereview.chromium.org/132353006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251077 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 251077
Code refactor(rename email to user_id in wallpaper_manager.*)

BUG=NONE

Review URL: https://codereview.chromium.org/138913011

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251078 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 251078