Removed policy::PolicyNamespaceKey.

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

Index: components/policy/core/common/cloud/user_cloud_policy_manager.cc
diff --git a/components/policy/core/common/cloud/user_cloud_policy_manager.cc b/components/policy/core/common/cloud/user_cloud_policy_manager.cc
index ed9e590c779b3e78433912fed2404fea9d633b0d..5af72fb2a9906c495dabbfbc3cbd3c8409ef2e9e 100644
--- a/components/policy/core/common/cloud/user_cloud_policy_manager.cc
+++ b/components/policy/core/common/cloud/user_cloud_policy_manager.cc
@@ -26,15 +26,16 @@ UserCloudPolicyManager::UserCloudPolicyManager(
     const scoped_refptr<base::SequencedTaskRunner>& task_runner,
     const scoped_refptr<base::SequencedTaskRunner>& file_task_runner,
     const scoped_refptr<base::SequencedTaskRunner>& io_task_runner)
-    : CloudPolicyManager(
-          PolicyNamespaceKey(GetChromeUserPolicyType(), std::string()),
-          store.get(),
-          task_runner,
-          file_task_runner,
-          io_task_runner),
+    : CloudPolicyManager(GetChromeUserPolicyType(),
+                         std::string(),
+                         store.get(),
+                         task_runner,
+                         file_task_runner,
+                         io_task_runner),
       store_(store.Pass()),
       component_policy_cache_path_(component_policy_cache_path),
-      external_data_manager_(external_data_manager.Pass()) {}
+      external_data_manager_(external_data_manager.Pass()) {
+}
 
 UserCloudPolicyManager::~UserCloudPolicyManager() {}
 
@@ -74,7 +75,7 @@ UserCloudPolicyManager::CreateCloudPolicyClient(
           std::string(),
           kPolicyVerificationKeyHash,
           USER_AFFILIATION_NONE,
-          NULL,
+          nullptr,
           device_management_service,
           request_context)).Pass();
 }