Suppress LongPress/Tap, and TwoFingerTap when TapDown cancels a fling.

content/browser/renderer_host/input/tap_suppression_controller.h

Index: content/browser/renderer_host/input/tap_suppression_controller.h
diff --git a/content/browser/renderer_host/input/tap_suppression_controller.h b/content/browser/renderer_host/input/tap_suppression_controller.h
index dc0def55e039c019ac7ba8fd42e8469a86ac4303..b238258b1c8909c6e5c5bd39baedbe3b4fdd198f 100644
--- a/content/browser/renderer_host/input/tap_suppression_controller.h
+++ b/content/browser/renderer_host/input/tap_suppression_controller.h
@@ -70,6 +70,12 @@ class CONTENT_EXPORT TapSuppressionController {
     GFC_IN_PROGRESS,
     TAP_DOWN_STASHED,
     LAST_CANCEL_STOPPED_FLING,
+    // When the stashed TapDown event is dropped or forwarded due to tap down
+    // timer expiration, the controller enters the SUPPRESSING_TAPS state.
+    // This state shows that the controller will suppress LongTap,
+    // TwoFingerTap, and TapCancel gesture events until the next tapDown event
+    // arrives.
+    SUPPRESSING_TAPS,
   };
 
   TapSuppressionControllerClient* client_;