[Activity Log] Whitelist the watchdog test app for management api.
Add watchdog test id to management whitelist

BUG=
TBR=mpcomplete@chromium.org
NOTRY=true

Review URL: https://chromiumcodereview.appspot.com/24278003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@224571 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 224571
Media Galleries: Make the read access test more comprehensive.

Review URL: https://chromiumcodereview.appspot.com/24257008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@224572 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 224572