Remove unsafe registry APIs from base::win::RegKey

remoting/host/daemon_process_win.cc

Index: remoting/host/daemon_process_win.cc
diff --git a/remoting/host/daemon_process_win.cc b/remoting/host/daemon_process_win.cc
index ee6a99ae4f7c970f6c04a48bd1943658fd6cd097..0e6e2bf89c6150738b4a36f0552558956ff6b2f7 100644
--- a/remoting/host/daemon_process_win.cc
+++ b/remoting/host/daemon_process_win.cc
@@ -363,7 +363,11 @@ bool DaemonProcessWin::OpenPairingRegistry() {
     result = ::RegCreateKeyEx(
         root.Handle(), kPairingRegistrySecretsKeyName, 0, nullptr, 0,
         KEY_READ | KEY_WRITE, &security_attributes, &key, &disposition);
-    privileged.Set(key);
+    if (result == ERROR_SUCCESS) {
+      RegCloseKey(key);
+      privileged.Open(root.Handle(), kPairingRegistrySecretsKeyName,
+                      KEY_READ | KEY_WRITE);
+    }
   }
 
   if (result != ERROR_SUCCESS) {
@@ -373,8 +377,8 @@ bool DaemonProcessWin::OpenPairingRegistry() {
     return false;
   }
 
-  pairing_registry_privileged_key_.Set(privileged.Take());
-  pairing_registry_unprivileged_key_.Set(unprivileged.Take());
+  pairing_registry_privileged_key_ = std::move(privileged);
+  pairing_registry_unprivileged_key_ = std::move(unprivileged);
   return true;
 }