Ensure acks are sent for all blocking events.

content/renderer/mus/render_widget_mus_connection.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/mus/render_widget_mus_connection.h"
 
 #include <map>
 
 #include "base/lazy_instance.h"
 #include "base/macros.h"
@@ skipping 102 matching lines @@
     std::unique_ptr<InputEventAck> input_event_ack) {
   DCHECK(!pending_ack_.is_null());
   pending_ack_.Run(input_event_ack->state ==
                            InputEventAckState::INPUT_EVENT_ACK_STATE_CONSUMED
                        ? mus::mojom::EventResult::HANDLED
                        : mus::mojom::EventResult::UNHANDLED);
   pending_ack_.Reset();
 }
 
 void RenderWidgetMusConnection::NotifyInputEventHandled(
-    blink::WebInputEvent::Type handled_type) {
+    blink::WebInputEvent::Type handled_type,
+    InputEventAckState ack_result) {
   NOTIMPLEMENTED();
 }
 
 void RenderWidgetMusConnection::SetInputHandler(
     RenderWidgetInputHandler* input_handler) {
   DCHECK(!input_handler_);
   input_handler_ = input_handler;
 }
 
 void RenderWidgetMusConnection::UpdateTextInputState(
@@ skipping 36 matching lines @@
   // previous event.
   // DCHECK(pending_ack_.is_null());
   pending_ack_ = ack;
   // TODO(fsamuel, sadrul): Track real latency info.
   ui::LatencyInfo latency_info;
   input_handler_->HandleInputEvent(*input_event, latency_info,
                                    DISPATCH_TYPE_BLOCKING);
 }
 
 }  // namespace content