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 8948e9d743a9c901155e291845211d9bb87442e5..3ca2bf24f58cd7113f867434814f832ecbd5f5ab 100644
--- a/content/browser/renderer_host/input/input_router_impl_perftest.cc
+++ b/content/browser/renderer_host/input/input_router_impl_perftest.cc
@@ -233,7 +233,7 @@ 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;