Replace NULL with nullptr or null in webrtc/base/.

webrtc/base/win32window_unittest.cc

 /*
  *  Copyright 2009 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.
  */
 
@@ skipping 21 matching lines @@
     destroyed_ = true;
   }
 
  private:
   MSG msg_;
   bool destroyed_;
 };
 
 TEST(Win32WindowTest, Basics) {
   TestWindow wnd;
-  EXPECT_TRUE(wnd.handle() == NULL);
+  EXPECT_TRUE(wnd.handle() == nullptr);
   EXPECT_FALSE(wnd.destroyed());
   EXPECT_TRUE(wnd.Create(0, L"Test", 0, 0, 0, 0, 100, 100));
-  EXPECT_TRUE(wnd.handle() != NULL);
+  EXPECT_TRUE(wnd.handle() != nullptr);
   EXPECT_EQ(kDummyResult, ::SendMessage(wnd.handle(), WM_USER, 1, 2));
   EXPECT_EQ(static_cast<UINT>(WM_USER), wnd.msg().message);
   EXPECT_EQ(1u, wnd.msg().wParam);
   EXPECT_EQ(2l, wnd.msg().lParam);
   wnd.Destroy();
-  EXPECT_TRUE(wnd.handle() == NULL);
+  EXPECT_TRUE(wnd.handle() == nullptr);
   EXPECT_TRUE(wnd.destroyed());
 }
 
 TEST(Win32WindowTest, MultipleWindows) {
   TestWindow wnd1, wnd2;
   EXPECT_TRUE(wnd1.Create(0, L"Test", 0, 0, 0, 0, 100, 100));
   EXPECT_TRUE(wnd2.Create(0, L"Test", 0, 0, 0, 0, 100, 100));
-  EXPECT_TRUE(wnd1.handle() != NULL);
-  EXPECT_TRUE(wnd2.handle() != NULL);
+  EXPECT_TRUE(wnd1.handle() != nullptr);
+  EXPECT_TRUE(wnd2.handle() != nullptr);
   wnd1.Destroy();
   wnd2.Destroy();
-  EXPECT_TRUE(wnd2.handle() == NULL);
-  EXPECT_TRUE(wnd1.handle() == NULL);
+  EXPECT_TRUE(wnd2.handle() == nullptr);
+  EXPECT_TRUE(wnd1.handle() == nullptr);
 }