Set the unique_event_id when converting from TouchEvent to WebTouchEvent

content/browser/renderer_host/input/input_router_impl.h

Index: content/browser/renderer_host/input/input_router_impl.h
diff --git a/content/browser/renderer_host/input/input_router_impl.h b/content/browser/renderer_host/input/input_router_impl.h
index 1abe33b6ad728fda3601ee28722f87e1874aa247..eccd3b82999adfa753c107eb370aea8315b969ba 100644
--- a/content/browser/renderer_host/input/input_router_impl.h
+++ b/content/browser/renderer_host/input/input_router_impl.h
@@ -145,6 +145,7 @@ private:
   void ProcessInputEventAck(blink::WebInputEvent::Type event_type,
                             InputEventAckState ack_result,
                             const ui::LatencyInfo& latency_info,
+                            uint64 uniqueEventId,

[tdresser, 2015/04/09 12:33:06]

unique_event_id

[tdresser, 2015/04/09 12:33:06]

I'm not clear on when you're calling it unique_touch_event_id, and when you're
calling it unique_event_id.

I think in this case, it should probably be unique_touch_event_id.

[lanwei, 2015/04/16 17:09:06]

Done.

                             AckSource ack_source);
 
   // Dispatches the ack'ed event to |ack_handler_|.
@@ -169,7 +170,8 @@ private:
   // Forwards the event ack to |touch_event_queue_|, potentially triggering
   // dispatch of queued touch events, or the creation of gesture events.
   void ProcessTouchAck(InputEventAckState ack_result,
-                       const ui::LatencyInfo& latency);
+                       const ui::LatencyInfo& latency,
+                       uint64 unique_touch_event_id);
 
   // Called when a touch timeout-affecting bit has changed, in turn toggling the
   // touch ack timeout feature of the |touch_event_queue_| as appropriate. Input