Make tapDown async.

content/browser/web_contents/touch_editable_impl_aura_browsertest.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 "content/browser/web_contents/touch_editable_impl_aura.h"
 
 #include "base/command_line.h"
 #include "base/run_loop.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/test/test_timeouts.h"
@@ skipping 333 matching lines @@
     ExecuteSyncJSFunction(view_host, "focus_textfield()");
     LOG(INFO) << "Wait for selection to change.";
     touch_editable->WaitForSelectionChangeCallback();
 
     // Tap textfield
     touch_editable->Reset();
     LOG(INFO) << "Tap in the textfield.";
     generator.GestureTapAt(gfx::Point(bounds.x() + 50, bounds.y() + 40));
     LOG(INFO) << "Wait for selection to change.";
     touch_editable->WaitForSelectionChangeCallback();
-    LOG(INFO) << "Wait for tap-down ACK.";
-    touch_editable->WaitForGestureAck();  // Wait for Tap Down Ack
+    // No Tap Down Ack is coming, it's async.
     touch_editable->Reset();
     LOG(INFO) << "Wait for tap ACK.";
     touch_editable->WaitForGestureAck();  // Wait for Tap Ack.
 
     LOG(INFO) << "Test the touch selection handle.";
     // Check if cursor handle is showing.
     ui::TouchSelectionController* controller =
         touch_editable->touch_selection_controller_.get();
     EXPECT_NE(ui::TEXT_INPUT_TYPE_NONE, touch_editable->text_input_type_);
     EXPECT_TRUE(controller);
@@ skipping 43 matching lines @@
                        TouchSelectionOnLongPressTest) {
   TestTouchSelectionOnLongPress();
 }
 
 IN_PROC_BROWSER_TEST_F(TouchEditableImplAuraTest,
                        TouchCursorInTextfieldTest) {
   TestTouchCursorInTextfield();
 }
 
 }  // namespace content