Get event targetting working for mouse events.

mojo/services/window_manager/view_event_dispatcher.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/window_manager/view_event_dispatcher.h"
 
+#include "mojo/services/public/cpp/view_manager/view.h"
 #include "mojo/services/window_manager/view_target.h"
 
 namespace mojo {
 
 ViewEventDispatcher::ViewEventDispatcher()
     : event_dispatch_target_(nullptr),
       old_dispatch_target_(nullptr) {
 }
 
 ViewEventDispatcher::~ViewEventDispatcher() {}
 
 void ViewEventDispatcher::SetRootViewTarget(ViewTarget* root_view_target) {
-  root_view_target_.reset(root_view_target);
+  root_view_target_ = root_view_target;
 }
 
 ui::EventTarget* ViewEventDispatcher::GetRootTarget() {
-  return root_view_target_.get();
+  return root_view_target_;
 }
 
 void ViewEventDispatcher::OnEventProcessingStarted(ui::Event* event) {
   // TODO(erg): In the aura version of this class, we perform a DIP based
   // transformation here. Do we want to do any sort of analogous transformation
   // here.
 }
 
 bool ViewEventDispatcher::CanDispatchToTarget(ui::EventTarget* target) {
   return event_dispatch_target_ == target;
@@ skipping 14 matching lines @@
     ui::EventTarget* target,
     const ui::Event& event) {
   // TODO(erg): Not at all as long as PreDispatchEvent, but still missing core
   // details.
   event_dispatch_target_ = old_dispatch_target_;
   old_dispatch_target_ = nullptr;
   return ui::EventDispatchDetails();
 }
 
 }  // namespace mojo