diff --git a/services/inputflinger/InputDispatcher.h b/services/inputflinger/InputDispatcher.h
index 3735a0b..183efa9 100644
--- a/services/inputflinger/InputDispatcher.h
+++ b/services/inputflinger/InputDispatcher.h
@@ -1006,6 +1006,13 @@
     sp<InputChannel> getInputChannelLocked(const sp<IBinder>& windowToken) const REQUIRES(mLock);
     bool hasWindowHandleLocked(const sp<InputWindowHandle>& windowHandle) const REQUIRES(mLock);
 
+    /*
+     * Validate and update InputWindowHandles for a given display.
+     */
+    void updateWindowHandlesForDisplayLocked(
+            const std::vector<sp<InputWindowHandle>>& inputWindowHandles, int32_t displayId)
+            REQUIRES(mLock);
+
     // Focus tracking for keys, trackball, etc.
     std::unordered_map<int32_t, sp<InputWindowHandle>> mFocusedWindowHandlesByDisplay
             GUARDED_BY(mLock);