Make RootView::DispatchGestureEvent() non-virtual

ui/views/widget/root_view.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/views/widget/root_view.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 244 matching lines @@
   //                   that event type has been refactored, and then
   //                   eventually remove this function altogether. See
   //                   crbug.com/348083.
   if (event->IsKeyEvent())
     return EventProcessor::OnEventFromSource(event);
   else if (event->IsScrollEvent())
     return EventProcessor::OnEventFromSource(event);
   else if (event->IsTouchEvent())
     NOTREACHED() << "Touch events should not be sent to RootView.";
   else if (event->IsGestureEvent())
-    DispatchGestureEvent(static_cast<ui::GestureEvent*>(event));
+    DispatchGestureEvent(event->AsGestureEvent());
   else if (event->IsMouseEvent())
     NOTREACHED() << "Should not be called with a MouseEvent.";
   else
     NOTREACHED() << "Invalid event type.";
 
   return DispatchDetails();
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // RootView, View overrides:
@@ skipping 532 matching lines @@
 
 #ifndef NDEBUG
   DCHECK(!event_dispatch_target_ || Contains(event_dispatch_target_));
 #endif
 
   return details;
 }
 
 }  // namespace internal
 }  // namespace views