Don't pass touches to gesture recognizer for async acks.

ui/aura/test/aura_test_utils.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 "ui/aura/test/aura_test_utils.h"
 
 #include "ui/aura/window_tree_host.h"
 
 namespace aura {
 namespace test {
 
-class WindowTreeHostTestApi {
- public:
-  explicit WindowTreeHostTestApi(WindowTreeHost* host) : host_(host) {}
+WindowTreeHostTestApi::WindowTreeHostTestApi(WindowTreeHost* host)
+    : host_(host) {
+}
 
-  const gfx::Point& last_cursor_request_position_in_host() {
-    return host_->last_cursor_request_position_in_host_;
-  }
+const gfx::Point&
+WindowTreeHostTestApi::last_cursor_request_position_in_host() {
+  return host_->last_cursor_request_position_in_host_;
+}
 
- private:
-  WindowTreeHost* host_;
-
-  DISALLOW_COPY_AND_ASSIGN(WindowTreeHostTestApi);
-};
+void WindowTreeHostTestApi::set_dispatcher(WindowEventDispatcher* dispatcher) {
+  host_->dispatcher_.reset(dispatcher);
+}
 
 const gfx::Point& QueryLatestMousePositionRequestInHost(WindowTreeHost* host) {
   WindowTreeHostTestApi host_test_api(host);
   return host_test_api.last_cursor_request_position_in_host();
 }
 
 }  // namespace test
 }  // namespace aura