Add path open errors from the permission broker to the device log.

device/hid/hid_service_linux.h

Index: device/hid/hid_service_linux.h
diff --git a/device/hid/hid_service_linux.h b/device/hid/hid_service_linux.h
index 9f87504f8d9469b5b4fd4a83b20daef439c553d4..7d928300ec17093454b310685cd43898677512b5 100644
--- a/device/hid/hid_service_linux.h
+++ b/device/hid/hid_service_linux.h
@@ -37,8 +37,12 @@ class HidServiceLinux : public HidService {
   // functions are static and the necessary parameters are passed as a single
   // struct.
 #if defined(OS_CHROMEOS)
-  static void OnPathOpened(scoped_ptr<ConnectParams> params,
-                           dbus::FileDescriptor fd);
+  static void OnPathOpenComplete(scoped_ptr<ConnectParams> params,
+                                 dbus::FileDescriptor fd);
+  static void OnPathOpenError(const std::string& device_path,
+                              const ConnectCallback& callback,
+                              const std::string& error_name,
+                              const std::string& error_message);
   static void ValidateFdOnBlockingThread(scoped_ptr<ConnectParams> params,
                                          dbus::FileDescriptor fd);
 #else