Makes windowmanager draw non-client area

components/mus/ws/event_dispatcher.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 "components/mus/ws/event_dispatcher.h"
 
 #include <set>
 
 #include "cc/surfaces/surface_hittest.h"
 #include "components/mus/surfaces/surfaces_state.h"
@@ skipping 16 matching lines @@
       flags & (mojom::EVENT_FLAGS_LEFT_MOUSE_BUTTON |
                mojom::EVENT_FLAGS_MIDDLE_MOUSE_BUTTON |
                mojom::EVENT_FLAGS_RIGHT_MOUSE_BUTTON);
   return mouse_only_flags == mojom::EVENT_FLAGS_LEFT_MOUSE_BUTTON ||
          mouse_only_flags == mojom::EVENT_FLAGS_MIDDLE_MOUSE_BUTTON ||
          mouse_only_flags == mojom::EVENT_FLAGS_RIGHT_MOUSE_BUTTON;
 }
 
 bool IsLocationInNonclientArea(const ServerWindow* target,
                                const gfx::Point& location) {
-  return target->parent() &&
-         !target->client_area().Contains(location);
+  if (!target->parent())
+    return false;
+
+  gfx::Rect client_area(target->bounds().size());
+  client_area.Inset(target->client_area());
+  return !client_area.Contains(location);
 }
 
 gfx::Point EventLocationToPoint(const mojom::Event& event) {
   return gfx::ToFlooredPoint(gfx::PointF(event.pointer_data->location->x,
                                          event.pointer_data->location->y));
 }
 
 }  // namespace
 
 class EventMatcher {
@@ skipping 257 matching lines @@
 void EventDispatcher::OnWindowVisibilityChanged(ServerWindow* window) {
   CancelPointerEventsToTarget(window);
 }
 
 void EventDispatcher::OnWindowDestroyed(ServerWindow* window) {
   CancelPointerEventsToTarget(window);
 }
 
 }  // namespace ws
 }  // namespace mus