Fixed uninitialized pointer found by Coverity.

BUG=None

Review URL: https://chromiumcodereview.appspot.com/23701011

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@221232 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/policy/cloud/user_policy_signin_service_factory.h

@@ -55,8 +55,6 @@ class UserPolicySigninServiceFactory
   UserPolicySigninServiceFactory();
   virtual ~UserPolicySigninServiceFactory();
 
-  DeviceManagementService* device_management_service_;
-
   DISALLOW_COPY_AND_ASSIGN(UserPolicySigninServiceFactory);
 };