diff --git a/libs/input/InputWindow.cpp b/libs/input/InputWindow.cpp
index 556a005..aa1371f 100644
--- a/libs/input/InputWindow.cpp
+++ b/libs/input/InputWindow.cpp
@@ -162,4 +162,8 @@
     return mInfo.token;
 }
 
+void InputWindowHandle::updateFrom(sp<InputWindowHandle> handle) {
+    mInfo = handle->mInfo;
+}
+
 } // namespace android