Deflaky ScreenCapturerTest

webrtc/modules/desktop_capture/screen_drawer.cc

 /*
  *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-// TODO(zijiehe): Implement ScreenDrawerMac
-
 #include "webrtc/modules/desktop_capture/screen_drawer.h"
 
 namespace webrtc {
 
-// static
-std::unique_ptr<ScreenDrawer> ScreenDrawer::Create() {
-  return nullptr;
+namespace {
+std::unique_ptr<ScreenDrawerLock> g_screen_drawer_lock;
+}  // namespace
+
+ScreenDrawerLock::ScreenDrawerLock() = default;
+ScreenDrawerLock::~ScreenDrawerLock() = default;
+
+ScreenDrawer::ScreenDrawer() {
+  g_screen_drawer_lock = ScreenDrawerLock::Create();
+}
+
+ScreenDrawer::~ScreenDrawer() {
+  g_screen_drawer_lock.reset();
 }
 
 }  // namespace webrtc