diff --git a/services/inputflinger/include/InputReaderBase.h b/services/inputflinger/include/InputReaderBase.h
index 6ef4a3d..305feab 100644
--- a/services/inputflinger/include/InputReaderBase.h
+++ b/services/inputflinger/include/InputReaderBase.h
@@ -242,6 +242,9 @@
     // context (a.k.a. "right") clicks.
     bool touchpadRightClickZoneEnabled;
 
+    // True to use three-finger tap as a customizable shortcut; false to use it as a middle-click.
+    bool touchpadThreeFingerTapShortcutEnabled;
+
     // The set of currently disabled input devices.
     std::set<int32_t> disabledDevices;
 
@@ -293,6 +296,7 @@
             touchpadTapDraggingEnabled(false),
             shouldNotifyTouchpadHardwareState(false),
             touchpadRightClickZoneEnabled(false),
+            touchpadThreeFingerTapShortcutEnabled(false),
             stylusButtonMotionEventsEnabled(true),
             stylusPointerIconEnabled(false),
             mouseReverseVerticalScrollingEnabled(false),
@@ -496,6 +500,9 @@
     /* Sends the Info of gestures that happen on the touchpad. */
     virtual void notifyTouchpadGestureInfo(GestureType type, int32_t deviceId) = 0;
 
+    /* Notifies the policy that the user has performed a three-finger touchpad tap. */
+    virtual void notifyTouchpadThreeFingerTap() = 0;
+
     /* Gets the keyboard layout for a particular input device. */
     virtual std::shared_ptr<KeyCharacterMap> getKeyboardLayoutOverlay(
             const InputDeviceIdentifier& identifier,