Coalesce async touch move events until the ack back from render

content/browser/renderer_host/input/input_router_impl_perftest.cc

Index: content/browser/renderer_host/input/input_router_impl_perftest.cc
diff --git a/content/browser/renderer_host/input/input_router_impl_perftest.cc b/content/browser/renderer_host/input/input_router_impl_perftest.cc
index 5888a8baacdeabc8f76dddb96398921829bd21d9..9d0924f2efa6f4e203a32cd733220cae20b551bb 100644
--- a/content/browser/renderer_host/input/input_router_impl_perftest.cc
+++ b/content/browser/renderer_host/input/input_router_impl_perftest.cc
@@ -233,11 +233,9 @@ class InputRouterImplPerfTest : public testing::Test {
 
   void SendEventAckIfNecessary(const blink::WebInputEvent& event,
                                InputEventAckState ack_result) {
-    if (WebInputEventTraits::IgnoresAckDisposition(event))
+    if (!WebInputEventTraits::WillReceiveAckFromRenderer(event))
       return;
-    InputHostMsg_HandleInputEvent_ACK_Params ack;
-    ack.type = event.type;
-    ack.state = ack_result;
+    InputEventAck ack(event.type, ack_result);
     InputHostMsg_HandleInputEvent_ACK response(0, ack);
     input_router_->OnMessageReceived(response);
   }