Use the location where FileDescriptorWatcher is created to track the libevent handlers

ui/ozone/platform/wayland/wayland_connection.cc

 // Copyright 2016 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 "ui/ozone/platform/wayland/wayland_connection.h"
 
 #include <xdg-shell-unstable-v5-client-protocol.h>
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/string_util.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "ui/ozone/platform/wayland/wayland_object.h"
 #include "ui/ozone/platform/wayland/wayland_window.h"
 
 static_assert(XDG_SHELL_VERSION_CURRENT == 5, "Unsupported xdg-shell version");
 
 namespace ui {
 namespace {
 const uint32_t kMaxCompositorVersion = 4;
 const uint32_t kMaxSeatVersion = 4;
 const uint32_t kMaxShmVersion = 1;
 const uint32_t kMaxXdgShellVersion = 1;
 }  // namespace
 
-WaylandConnection::WaylandConnection() {}
+WaylandConnection::WaylandConnection() : controller_(FROM_HERE) {}
 
 WaylandConnection::~WaylandConnection() {}
 
 bool WaylandConnection::Initialize() {
   static const wl_registry_listener registry_listener = {
       &WaylandConnection::Global, &WaylandConnection::GlobalRemove,
   };
 
   display_.reset(wl_display_connect(nullptr));
   if (!display_) {
@@ skipping 209 matching lines @@
 void WaylandConnection::Name(void* data, wl_seat* seat, const char* name) {}
 
 // static
 void WaylandConnection::Ping(void* data, xdg_shell* shell, uint32_t serial) {
   WaylandConnection* connection = static_cast<WaylandConnection*>(data);
   xdg_shell_pong(shell, serial);
   connection->ScheduleFlush();
 }
 
 }  // namespace ui