mash: Convert OnWindowInputEventAck to use an enum for handled status

components/mus/ws/window_tree.cc

 // Copyright 2014 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 "components/mus/ws/window_tree.h"
 
 #include <stddef.h>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 1201 matching lines @@
   if (success) {
     if (!state.is_null())
       window->SetTextInputState(state.To<ui::TextInputState>());
 
     Display* display = GetDisplay(window);
     if (display)
       display->SetImeVisibility(window, visible);
   }
 }
 
-void WindowTree::OnWindowInputEventAck(uint32_t event_id, bool handled) {
+void WindowTree::OnWindowInputEventAck(uint32_t event_id,
+                                       mojom::EventResult result) {
   if (event_ack_id_ == 0 || event_id != event_ack_id_) {
     // TODO(sad): Something bad happened. Kill the client?
     NOTIMPLEMENTED() << "Wrong event acked.";
   }
   event_ack_id_ = 0;
 
   WindowManagerState* event_source_wms = event_source_wms_;
   event_source_wms_ = nullptr;
   if (event_source_wms)
-    event_source_wms->OnEventAck(this, handled);
+    event_source_wms->OnEventAck(this, result);
 
   if (!event_queue_.empty()) {
     DCHECK(!event_ack_id_);
     ServerWindow* target = nullptr;
     scoped_ptr<ui::Event> event;
     do {
       scoped_ptr<TargetedEvent> targeted_event =
           std::move(event_queue_.front());
       event_queue_.pop();
       target = targeted_event->target();
@@ skipping 165 matching lines @@
 }
 
 bool WindowTree::IsWindowRootOfAnotherTreeForAccessPolicy(
     const ServerWindow* window) const {
   WindowTree* tree = window_server_->GetTreeWithRoot(window);
   return tree && tree != this;
 }
 
 }  // namespace ws
 }  // namespace mus