Delay Input.dispatchKeyEvent response until after key event ack.

content/browser/renderer_host/render_widget_host_impl.cc

 // Copyright (c) 2012 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/browser/renderer_host/render_widget_host_impl.h"
 
 #include <math.h>
 
 #include <set>
 #include <tuple>
@@ skipping 2135 matching lines @@
     ui::LatencyInfo* latency) {
   latency_tracker_.OnInputEvent(event, latency);
   for (auto& observer : input_event_observers_)
     observer.OnInputEvent(event);
 }
 
 void RenderWidgetHostImpl::OnKeyboardEventAck(
       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);
 
   // We only send unprocessed key event upwards if we are not hidden,
   // because the user has moved away from us and no longer expect any effect
   // of this key event.
   if (delegate_ && !processed && !is_hidden() && !event.event.skip_in_browser) {
     delegate_->HandleKeyboardEvent(event.event);
 
     // WARNING: This RenderWidgetHostImpl can be deallocated at this point
     // (i.e.  in the case of Ctrl+W, where the call to
     // HandleKeyboardEvent destroys this RenderWidgetHostImpl).
   }
 }
 
 void RenderWidgetHostImpl::OnMouseEventAck(
     const MouseEventWithLatencyInfo& mouse_event,
     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(
     const MouseWheelEventWithLatencyInfo& wheel_event,
     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 &&
         delegate_ && delegate_->HandleWheelEvent(wheel_event.event)) {
       ack_result = INPUT_EVENT_ACK_STATE_CONSUMED;
     }
     view_->WheelEventAck(wheel_event.event, ack_result);
   }
 }
 
 void RenderWidgetHostImpl::OnGestureEventAck(
     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);
 }
 
 void RenderWidgetHostImpl::OnTouchEventAck(
     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)) {
     return;
   }
 
   if (view_)
     view_->ProcessAckedTouchEvent(event, ack_result);
 }
 
@@ skipping 287 matching lines @@
     // Note: We are using the origin URL provided by the sender here. It may be
     // different from the receiver's.
     file_system_file.url =
         GURL(storage::GetIsolatedFileSystemRootURIString(
                  file_system_url.origin(), filesystem_id, std::string())
                  .append(register_name));
   }
 }
 
 }  // namespace content