Added support for signed policy blobs on desktop.

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 6e473390f3714a14bbc971b00cda5a4e031b49aa..31ed364ebfffdf1e446e63992a41a74a4d06b3ec 100644
--- a/components/policy/core/common/cloud/user_cloud_policy_manager.cc
+++ b/components/policy/core/common/cloud/user_cloud_policy_manager.cc
@@ -20,6 +20,7 @@ namespace em = enterprise_management;
 namespace policy {
 
 UserCloudPolicyManager::UserCloudPolicyManager(
+    const std::string& verification_key_hash,
     scoped_ptr<UserCloudPolicyStore> store,
     const base::FilePath& component_policy_cache_path,
     scoped_ptr<CloudExternalDataManager> external_data_manager,
@@ -28,6 +29,7 @@ UserCloudPolicyManager::UserCloudPolicyManager(
     const scoped_refptr<base::SequencedTaskRunner>& io_task_runner)
     : CloudPolicyManager(
           PolicyNamespaceKey(GetChromeUserPolicyType(), std::string()),
+          verification_key_hash,
           store.get(),
           task_runner,
           file_task_runner,
@@ -72,6 +74,7 @@ UserCloudPolicyManager::CreateCloudPolicyClient(
       new CloudPolicyClient(
           std::string(),
           std::string(),
+          verification_key_hash(),
           USER_AFFILIATION_NONE,
           NULL,
           device_management_service,