In AccessibilityGestureDetector.clear(), dispatch a MotionEvent.ACTION_CLEAR event to mGestureDetector to cancel the ongoing gesture.

am: 37ee5c796e

Change-Id: I0f76484c70e08435494f9e9ff1223082c9a3ceac

services/accessibility/java/com/android/server/accessibility/AccessibilityGestureDetector.java

@@ -341,6 +341,8 @@ class AccessibilityGestureDetector extends GestureDetector.SimpleOnGestureListen
         mDoubleTapDetected = false;
         mSecondFingerDoubleTap = false;
         mGestureStarted = false;
+        mGestureDetector.onTouchEvent(MotionEvent.obtain(0L, 0L, MotionEvent.ACTION_CANCEL,
+                0.0f, 0.0f, 0));
         cancelGesture();
     }