Fix a few issues with touch-events and views-desktop.

views/touchui/gesture_manager.cc

 // Copyright (c) 2011 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 "views/touchui/gesture_manager.h"
 #ifndef NDEBUG
 #include <iostream>
 #endif
 
 #include "base/logging.h"
@@ skipping 14 matching lines @@
                                                  View* source,
                                                  ui::TouchStatus status) {
   if (status != ui::TOUCH_STATUS_UNKNOWN)
     return false;  // The event was consumed by a touch sequence.
 
   // TODO(rjkroege): A realistic version of the GestureManager will
   // appear in a subsequent CL. This interim version permits verifying that the
   // event distribution code works by turning all touch inputs into
   // mouse approximations.
 
+  // Conver the touch-event into a mouse-event. This mouse-event gets its
+  // location information from the native-event, so it needs to drop on the
+  // toplevel widget instead of just source->GetWidget.
   Event::FromNativeEvent2 from_native;
   MouseEvent mouseev(event, from_native);
-  source->GetWidget()->OnMouseEvent(mouseev);
+  source->GetWidget()->GetTopLevelWidget()->OnMouseEvent(mouseev);
   return true;
 }
 
 GestureManager::GestureManager() {
 }
 
 }  // namespace views