Fix ownership bug with ViewObserver::OnViewInputEvent

mojo/services/public/cpp/view_manager/lib/view_manager_synchronizer.cc

 // Copyright 2014 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 "mojo/services/public/cpp/view_manager/lib/view_manager_synchronizer.h"
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
 #include "mojo/public/cpp/application/connect.h"
 #include "mojo/public/interfaces/service_provider/service_provider.mojom.h"
@@ skipping 630 matching lines @@
 }
 
 void ViewManagerSynchronizer::OnViewInputEvent(
     uint32_t view_id,
     EventPtr event,
     const Callback<void()>& ack_callback) {
   View* view = view_manager_->GetViewById(view_id);
   if (view) {
     FOR_EACH_OBSERVER(ViewObserver,
                       *ViewPrivate(view).observers(),
-                      OnViewInputEvent(view, event.Pass()));
+                      OnViewInputEvent(view, event));
   }
   ack_callback.Run();
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // ViewManagerSynchronizer, private:
 
 void ViewManagerSynchronizer::Sync() {
   // The service connection may not be set up yet. OnConnectionEstablished()
   // will schedule another sync when it is.
@@ skipping 10 matching lines @@
 void ViewManagerSynchronizer::RemoveFromPendingQueue(
     ViewManagerTransaction* transaction) {
   DCHECK_EQ(transaction, pending_transactions_.front());
   pending_transactions_.erase(pending_transactions_.begin());
   if (pending_transactions_.empty() && !changes_acked_callback_.is_null())
     changes_acked_callback_.Run();
 }
 
 }  // namespace view_manager
 }  // namespace mojo