events: Move EventTarget into Event.

ui/aura/root_window.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/aura/root_window.h"
 
 #include <vector>
 
 #include "base/auto_reset.h"
 #include "base/bind.h"
@@ skipping 637 matching lines @@
   EventFilters filters;
   if (target == this)
     GetEventFiltersToNotify(target, &filters);
   else
     GetEventFiltersToNotify(target->parent(), &filters);
 
   // |target| can be deleted by any of the handlers below.
   WindowTracker tracker;
   tracker.Add(target);
 
+  event->set_target(target);
   for (EventFilters::const_reverse_iterator it = filters.rbegin(),
            rend = filters.rend();
        it != rend; ++it) {
     ui::TouchStatus status = (*it)->PreHandleTouchEvent(target, event);
     if (status != ui::TOUCH_STATUS_UNKNOWN)
       return status;
   }
 
   if (tracker.Contains(target) && target->delegate()) {
     ui::TouchStatus status = target->delegate()->OnTouchEvent(event);
@@ skipping 396 matching lines @@
 void RootWindow::UnlockCompositor() {
   DCHECK(compositor_lock_);
   compositor_lock_ = NULL;
   if (draw_on_compositor_unlock_) {
     draw_on_compositor_unlock_ = false;
     ScheduleDraw();
   }
 }
 
 }  // namespace aura