Synthesize ctrl-wheel events on touchpad pinch

content/browser/renderer_host/input/mock_input_ack_handler.cc

 // Copyright 2013 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/renderer_host/input/mock_input_ack_handler.h"
 
 #include "content/browser/renderer_host/input/input_router.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using base::TimeDelta;
@@ skipping 12 matching lines @@
     unexpected_event_ack_called_(false),
     ack_state_(INPUT_EVENT_ACK_STATE_UNKNOWN) {}
 
 MockInputAckHandler::~MockInputAckHandler() {}
 
 void MockInputAckHandler::OnKeyboardEventAck(
     const NativeWebKeyboardEvent& event,
     InputEventAckState ack_result)  {
   VLOG(1) << __FUNCTION__ << " called!";
   acked_key_event_ = event;
-  RecordAckCalled(ack_result);
+  RecordAckCalled(event.type, ack_result);
 }
 
 void MockInputAckHandler::OnWheelEventAck(
     const MouseWheelEventWithLatencyInfo& event,
     InputEventAckState ack_result) {
   VLOG(1) << __FUNCTION__ << " called!";
   acked_wheel_event_ = event.event;
-  RecordAckCalled(ack_result);
+  RecordAckCalled(event.event.type, ack_result);
 }
 
 void MockInputAckHandler::OnTouchEventAck(
     const TouchEventWithLatencyInfo& event,
     InputEventAckState ack_result) {
   VLOG(1) << __FUNCTION__ << " called!";
   acked_touch_event_ = event;
-  RecordAckCalled(ack_result);
+  RecordAckCalled(event.event.type, ack_result);
   if (touch_followup_event_)
     input_router_->SendTouchEvent(*touch_followup_event_);
   if (gesture_followup_event_)
     input_router_->SendGestureEvent(*gesture_followup_event_);
 }
 
 void MockInputAckHandler::OnGestureEventAck(
     const GestureEventWithLatencyInfo& event,
     InputEventAckState ack_result) {
   VLOG(1) << __FUNCTION__ << " called!";
   acked_gesture_event_ = event.event;
-  RecordAckCalled(ack_result);
+  RecordAckCalled(event.event.type, ack_result);
 }
 
 void MockInputAckHandler::OnUnexpectedEventAck(UnexpectedEventAckType type)  {
   VLOG(1) << __FUNCTION__ << " called!";
   unexpected_event_ack_called_ = true;
 }
 
 size_t MockInputAckHandler::GetAndResetAckCount() {
   size_t ack_count = ack_count_;
   ack_count_ = 0;
   return ack_count;
 }
 
-void MockInputAckHandler::RecordAckCalled(InputEventAckState ack_result) {
+void MockInputAckHandler::RecordAckCalled(blink::WebInputEvent::Type type,
+                                          InputEventAckState ack_result) {
+  ack_event_type_ = type;
   ++ack_count_;
   ack_state_ = ack_result;
 }
 
 }  // namespace content