aura: Remove event-dispatch methods from WindowTreeHostDelegate interface.

ui/aura/test/aura_test_base.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/test/aura_test_base.h"
 
 #include "ui/aura/client/window_tree_client.h"
 #include "ui/aura/root_window.h"
 #include "ui/aura/test/aura_test_helper.h"
 #include "ui/aura/test/test_window_delegate.h"
 #include "ui/aura/window.h"
 #include "ui/base/ime/input_method_initializer.h"
+#include "ui/events/event_dispatcher.h"
 #include "ui/events/gestures/gesture_configuration.h"
 
 namespace aura {
 namespace test {
 
 AuraTestBase::AuraTestBase()
     : setup_called_(false),
       teardown_called_(false) {
 }
 
@@ skipping 76 matching lines @@
 }
 
 void AuraTestBase::RunAllPendingInMessageLoop() {
   helper_->RunAllPendingInMessageLoop();
 }
 
 void AuraTestBase::ParentWindow(Window* window) {
   client::ParentWindowWithContext(window, root_window(), gfx::Rect());
 }
 
+bool AuraTestBase::DispatchEventUsingWindowDispatcher(ui::Event* event) {
+  ui::EventDispatchDetails details = dispatcher()->OnEventFromSource(event);
+  CHECK(!details.dispatcher_destroyed);
+  return event->handled();
+}
+
 }  // namespace test
 }  // namespace aura