mash: Remove ash::ShelfGestureHandler and ui::ET_GESTURE_WIN8_EDGE_SWIPE

ash/wm/immersive_fullscreen_controller.cc

Index: ash/wm/immersive_fullscreen_controller.cc
diff --git a/ash/wm/immersive_fullscreen_controller.cc b/ash/wm/immersive_fullscreen_controller.cc
index 8c7e84ee630f423215c17f7be438857771876d53..cea383c41af77f2420e3db45995deb572a4f51cb 100644
--- a/ash/wm/immersive_fullscreen_controller.cc
+++ b/ash/wm/immersive_fullscreen_controller.cc
@@ -404,12 +404,6 @@ void ImmersiveFullscreenController::OnGestureEvent(ui::GestureEvent* event) {
     return;
 
   switch (event->type()) {
-#if defined(OS_WIN)
-    case ui::ET_GESTURE_WIN8_EDGE_SWIPE:
-      UpdateRevealedLocksForSwipe(GetSwipeType(event));
-      event->SetHandled();
-      break;
-#endif
     case ui::ET_GESTURE_SCROLL_BEGIN:
       if (ShouldHandleGestureEvent(GetEventLocationInScreen(*event))) {
         gesture_begun_ = true;