Implementing the dispatch of the swipe gesture for one-finger touch swipes.

ash/wm/toplevel_window_event_handler.cc

Index: ash/wm/toplevel_window_event_handler.cc
diff --git a/ash/wm/toplevel_window_event_handler.cc b/ash/wm/toplevel_window_event_handler.cc
index f20a13fc7dd2b90e8601a284defbc3a6d5236783..5d9ce4bb0d409190e5f2bd17fc637ef124d4f2c3 100644
--- a/ash/wm/toplevel_window_event_handler.cc
+++ b/ash/wm/toplevel_window_event_handler.cc
@@ -344,7 +344,10 @@ void ToplevelWindowEventHandler::OnGestureEvent(ui::GestureEvent* event) {
       }
       event->StopPropagation();
       return;
-    case ui::ET_GESTURE_MULTIFINGER_SWIPE:
+    case ui::ET_GESTURE_SWIPE:
+      DCHECK_GT(event->details().touch_points(), 0);
+      if (event->details().touch_points() == 1)
+        return;
       if (!wm::GetWindowState(target)->IsNormalOrSnapped())
         return;