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

ui/aura/test/aura_test_utils.cc

Index: ui/aura/test/aura_test_utils.cc
diff --git a/ui/aura/test/aura_test_utils.cc b/ui/aura/test/aura_test_utils.cc
index fe4120b4dcddc9a8f25e9d37b54f7dea32bc694f..33fc19e4b77d97a210fa5ae3f5a76c5a20a535ce 100644
--- a/ui/aura/test/aura_test_utils.cc
+++ b/ui/aura/test/aura_test_utils.cc
@@ -9,19 +9,18 @@
 namespace aura {
 namespace test {
 
-class WindowTreeHostTestApi {
- public:
-  explicit WindowTreeHostTestApi(WindowTreeHost* host) : host_(host) {}
-
-  const gfx::Point& last_cursor_request_position_in_host() {
-    return host_->last_cursor_request_position_in_host_;
-  }
+WindowTreeHostTestApi::WindowTreeHostTestApi(WindowTreeHost* host)
+    : host_(host) {
+}
 
- private:
-  WindowTreeHost* host_;
+const gfx::Point&
+WindowTreeHostTestApi::last_cursor_request_position_in_host() {
+  return host_->last_cursor_request_position_in_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);