Toggling windows with (shift)-f5 and (shift)-alt-tab does not repeat on key repeat anymore.

ash/wm/system_gesture_event_filter.cc

Index: ash/wm/system_gesture_event_filter.cc
diff --git a/ash/wm/system_gesture_event_filter.cc b/ash/wm/system_gesture_event_filter.cc
index ccb2879977f6474c06b7f7225fa3aa8cab494a57..27e1aa4926a4749b95b0b81c6232c9fe16d3363b 100644
--- a/ash/wm/system_gesture_event_filter.cc
+++ b/ash/wm/system_gesture_event_filter.cc
@@ -114,8 +114,13 @@ ui::EventResult SystemGestureEventFilter::PreHandleGestureEvent(
         SystemPinchHandler::kSystemGesturePoints) {
       ash::AcceleratorController* accelerator =
           ash::Shell::GetInstance()->accelerator_controller();
-      if (accelerator->PerformAction(CYCLE_FORWARD_MRU, ui::Accelerator()))
+      if (accelerator->PerformAction(CYCLE_FORWARD_MRU_PRESSED,
+                                     ui::Accelerator())) {
+        accelerator->PerformAction(CYCLE_FORWARD_MRU_RELEASED,
+                                   ui::Accelerator());
         return ui::ER_CONSUMED;
+      }
+      accelerator->PerformAction(CYCLE_FORWARD_MRU_RELEASED, ui::Accelerator());
     }
     return ui::ER_UNHANDLED;
   }