Revert of Delay Input.dispatchKeyEvent response until after key event ack.

content/browser/renderer_host/render_widget_host_impl.cc

Index: content/browser/renderer_host/render_widget_host_impl.cc
diff --git a/content/browser/renderer_host/render_widget_host_impl.cc b/content/browser/renderer_host/render_widget_host_impl.cc
index fdc3d948127e6a0245f869171a79e234e8369048..adf4451262e8977929e0cf626417eb3abdf2aad5 100644
--- a/content/browser/renderer_host/render_widget_host_impl.cc
+++ b/content/browser/renderer_host/render_widget_host_impl.cc
@@ -2154,8 +2154,6 @@
       const NativeWebKeyboardEventWithLatencyInfo& event,
       InputEventAckState ack_result) {
   latency_tracker_.OnInputEventAck(event.event, &event.latency, ack_result);
-  for (auto& input_event_observer : input_event_observers_)
-    input_event_observer.OnInputEventAck(event.event);
 
   const bool processed = (INPUT_EVENT_ACK_STATE_CONSUMED == ack_result);
 
@@ -2176,8 +2174,6 @@
     InputEventAckState ack_result) {
   latency_tracker_.OnInputEventAck(mouse_event.event, &mouse_event.latency,
                                    ack_result);
-  for (auto& input_event_observer : input_event_observers_)
-    input_event_observer.OnInputEventAck(mouse_event.event);
 }
 
 void RenderWidgetHostImpl::OnWheelEventAck(
@@ -2185,8 +2181,6 @@
     InputEventAckState ack_result) {
   latency_tracker_.OnInputEventAck(wheel_event.event, &wheel_event.latency,
                                    ack_result);
-  for (auto& input_event_observer : input_event_observers_)
-    input_event_observer.OnInputEventAck(wheel_event.event);
 
   if (!is_hidden() && view_) {
     if (ack_result != INPUT_EVENT_ACK_STATE_CONSUMED &&
@@ -2201,8 +2195,6 @@
     const GestureEventWithLatencyInfo& event,
     InputEventAckState ack_result) {
   latency_tracker_.OnInputEventAck(event.event, &event.latency, ack_result);
-  for (auto& input_event_observer : input_event_observers_)
-    input_event_observer.OnInputEventAck(event.event);
 
   if (view_)
     view_->GestureEventAck(event.event, ack_result);
@@ -2212,8 +2204,6 @@
     const TouchEventWithLatencyInfo& event,
     InputEventAckState ack_result) {
   latency_tracker_.OnInputEventAck(event.event, &event.latency, ack_result);
-  for (auto& input_event_observer : input_event_observers_)
-    input_event_observer.OnInputEventAck(event.event);
 
   if (touch_emulator_ &&
       touch_emulator_->HandleTouchEventAck(event.event, ack_result)) {