Reland: Remove aura and make a pure mojo::View version of FocusController.

mojo/services/window_manager/native_viewport_event_dispatcher_impl.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/native_viewport_event_dispatcher_impl.h"
 
-#include "mojo/aura/window_tree_host_mojo.h"
 #include "mojo/converters/input_events/input_events_type_converters.h"
+#include "mojo/services/window_manager/view_event_dispatcher.h"
 #include "mojo/services/window_manager/window_manager_app.h"
 
 namespace mojo {
 
 NativeViewportEventDispatcherImpl::NativeViewportEventDispatcherImpl(
     WindowManagerApp* app)
     : app_(app) {
 }
 NativeViewportEventDispatcherImpl::~NativeViewportEventDispatcherImpl() {
 }
 
+ui::EventProcessor* NativeViewportEventDispatcherImpl::GetEventProcessor() {
+  return app_->event_dispatcher();
+}
+
 void NativeViewportEventDispatcherImpl::OnEvent(
     mojo::EventPtr event,
     const mojo::Callback<void()>& callback) {
   scoped_ptr<ui::Event> ui_event = event.To<scoped_ptr<ui::Event>>();
+
   if (ui_event)
-    app_->host()->SendEventToProcessor(ui_event.get());
+    SendEventToProcessor(ui_event.get());
+
   callback.Run();
 }
 
 }  // namespace mojo