mus Window Server: implement event capture

components/mus/ws/test_change_tracker.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/test_change_tracker.h"
 
 #include <stddef.h>
 
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
@@ skipping 29 matching lines @@
       return "OnEmbed";
 
     case CHANGE_TYPE_EMBEDDED_APP_DISCONNECTED:
       return base::StringPrintf("OnEmbeddedAppDisconnected window=%s",
                                 WindowIdToString(change.window_id).c_str());
 
     case CHANGE_TYPE_UNEMBED:
       return base::StringPrintf("OnUnembed window=%s",
                                 WindowIdToString(change.window_id).c_str());
 
+    case CHANGE_TYPE_LOST_CAPTURE:
+      return base::StringPrintf("OnLostCapture window=%s",
+                                WindowIdToString(change.window_id).c_str());
+
     case CHANGE_TYPE_NODE_ADD_TRANSIENT_WINDOW:
       return base::StringPrintf("AddTransientWindow parent = %s child = %s",
                                 WindowIdToString(change.window_id).c_str(),
                                 WindowIdToString(change.window_id2).c_str());
 
     case CHANGE_TYPE_NODE_BOUNDS_CHANGED:
       return base::StringPrintf(
           "BoundsChanged window=%s old_bounds=%s new_bounds=%s",
           WindowIdToString(change.window_id).c_str(),
           RectToString(change.bounds).c_str(),
@@ skipping 191 matching lines @@
 
 void TestChangeTracker::OnTransientWindowRemoved(Id window_id,
                                                  Id transient_window_id) {
   Change change;
   change.type = CHANGE_TYPE_NODE_REMOVE_TRANSIENT_WINDOW_FROM_PARENT;
   change.window_id = window_id;
   change.window_id2 = transient_window_id;
   AddChange(change);
 }
 
+void TestChangeTracker::OnLostCapture(Id window_id) {
+  Change change;
+  change.type = CHANGE_TYPE_LOST_CAPTURE;
+  change.window_id = window_id;
+  AddChange(change);
+}
+
 void TestChangeTracker::OnWindowViewportMetricsChanged(
     mojom::ViewportMetricsPtr old_metrics,
     mojom::ViewportMetricsPtr new_metrics) {
   Change change;
   change.type = CHANGE_TYPE_NODE_VIEWPORT_METRICS_CHANGED;
   // NOT IMPLEMENTED
   AddChange(change);
 }
 
 void TestChangeTracker::OnWindowHierarchyChanged(
@@ skipping 120 matching lines @@
 std::string TestWindow::ToString2() const {
   return base::StringPrintf(
       "window=%s parent=%s visible=%s drawn=%s",
       WindowIdToString(window_id).c_str(), WindowIdToString(parent_id).c_str(),
       visible ? "true" : "false", drawn ? "true" : "false");
 }
 
 }  // namespace ws
 
 }  // namespace mus