[Tizen] SecurityPolicy classes rename and move

This patch renames:
- SecurityPolicy to ApplicationSecurityPolicy,
- SecurityPolicyCSP to ApplicationSecurityPolicyCSP,
- SecurityPolicyWARP to ApplicationSecurityPolicyWARP,
- common/security_policy.h to browser/application_security_policy.h,
- common/security_policy.cc to browser/application_security_policy.cc.
Merge pull request #2649 from sstolinski/SecurityPolicy

[Tizen] SecurityPolicy classes rename and move