Drop verification_key_hash from CloudPolicyClient constructor

components/policy/core/common/cloud/mock_cloud_policy_client.cc

Index: components/policy/core/common/cloud/mock_cloud_policy_client.cc
diff --git a/components/policy/core/common/cloud/mock_cloud_policy_client.cc b/components/policy/core/common/cloud/mock_cloud_policy_client.cc
index c3bdef223724144e47cc069360b5a8f4fe29bf0b..c1b4696f3fe60d218b41da6fe31c79f93b8f74f5 100644
--- a/components/policy/core/common/cloud/mock_cloud_policy_client.cc
+++ b/components/policy/core/common/cloud/mock_cloud_policy_client.cc
@@ -16,7 +16,6 @@ namespace policy {
 MockCloudPolicyClient::MockCloudPolicyClient()
     : CloudPolicyClient(std::string(),

[emaxx, 2016/11/29 14:24:58]

nit: I understand that this is the old and testing-only code, but I think it
would be nice to have comments here containing the names of the arguments.

[Thiemo Nagel, 2016/11/29 15:16:38]

Done.

                         std::string(),
-                        std::string(),
                         nullptr,
                         nullptr,
                         nullptr) {}