Index: content/renderer/input/input_event_filter.cc |
diff --git a/content/renderer/input/input_event_filter.cc b/content/renderer/input/input_event_filter.cc |
index 180be389354052d41f59adf08e1000f71da72ef9..7fde873e4cb02c14d7402d8371059aee9683815d 100644 |
--- a/content/renderer/input/input_event_filter.cc |
+++ b/content/renderer/input/input_event_filter.cc |
@@ -181,6 +181,13 @@ void InputEventFilter::ForwardToHandler(const IPC::Message& message) { |
ack.state = ack_state; |
ack.latency = latency_info; |
ack.overscroll = overscroll_params.Pass(); |
+ if (WebInputEvent::isTouchEventType(ack.type)) { |
+ const blink::WebTouchEvent& touch = |
+ static_cast<const blink::WebTouchEvent&>(*event); |
+ DCHECK_NE(touch.uniqueTouchEventId, 0UL); |
+ ack.unique_touch_event_id = touch.uniqueTouchEventId; |
+ } |
+ |
SendMessage(scoped_ptr<IPC::Message>( |
new InputHostMsg_HandleInputEvent_ACK(routing_id, ack))); |
} |