Clear pending events upon main frame navigation

ui/events/gesture_detection/gesture_provider.cc

Index: ui/events/gesture_detection/gesture_provider.cc
diff --git a/ui/events/gesture_detection/gesture_provider.cc b/ui/events/gesture_detection/gesture_provider.cc
index 3535ad604af64a545669830e250c32c9986043e1..5f10b354f0d1e45f53d39669900c1c4b3491b12c 100644
--- a/ui/events/gesture_detection/gesture_provider.cc
+++ b/ui/events/gesture_detection/gesture_provider.cc
@@ -11,7 +11,7 @@
 #include "ui/events/event_constants.h"
 #include "ui/events/gesture_detection/gesture_event_data.h"
 #include "ui/events/gesture_detection/gesture_listeners.h"
-#include "ui/events/gesture_detection/motion_event.h"
+#include "ui/events/gesture_detection/motion_event_generic.h"
 #include "ui/events/gesture_detection/scale_gesture_listeners.h"
 #include "ui/gfx/geometry/point_f.h"
 
@@ -711,6 +711,14 @@ bool GestureProvider::OnTouchEvent(const MotionEvent& event) {
   return true;
 }
 
+void GestureProvider::ResetDetection() {
+  ui::MotionEventGeneric synthetic_cancel(ui::MotionEvent::ACTION_CANCEL,
+                                          base::TimeTicks::Now(),
+                                          ui::PointerProperties());
+  OnTouchEvent(synthetic_cancel);
+  DCHECK(!current_down_event_);
+}
+
 void GestureProvider::SetMultiTouchZoomSupportEnabled(bool enabled) {
   gesture_listener_->SetMultiTouchZoomEnabled(enabled);
 }