Replace NULL with nullptr in all C++ files.

webrtc/base/autodetectproxy_unittest.cc

 /*
  *  Copyright 2004 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 15 matching lines @@
 // 1) Resolution + HTTPS takes full 4 seconds and fails (but resolution
 // succeeds).
 // 2) SOCKS5 takes the full 2 seconds.
 // Socket creation time seems unbounded, and has been observed to take >1 second
 // on a linux machine under load. As such, we allow for 10 seconds for timeout,
 // though could still end up with some flakiness.
 static const int kTimeoutMs = 10000;
 
 class AutoDetectProxyTest : public testing::Test, public sigslot::has_slots<> {
  public:
-  AutoDetectProxyTest() : auto_detect_proxy_(NULL), done_(false) {}
+  AutoDetectProxyTest() : auto_detect_proxy_(nullptr), done_(false) {}
 
  protected:
   bool Create(const std::string& user_agent,
               const std::string& path,
               const std::string& host,
               uint16_t port,
               bool secure,
               bool startnow) {
     auto_detect_proxy_ = new AutoDetectProxy(user_agent);
-    EXPECT_TRUE(auto_detect_proxy_ != NULL);
+    EXPECT_TRUE(auto_detect_proxy_ != nullptr);
     if (!auto_detect_proxy_) {
       return false;
     }
     Url<char> host_url(path, host, port);
     host_url.set_secure(secure);
     auto_detect_proxy_->set_server_url(host_url.url());
     auto_detect_proxy_->SignalWorkDone.connect(
         this,
         &AutoDetectProxyTest::OnWorkDone);
     if (startnow) {
@@ skipping 26 matching lines @@
     SetProxy(proxy);
     Start();
     ASSERT_TRUE(Run(kTimeoutMs));
   }
 
  private:
   void OnWorkDone(rtc::SignalThread *thread) {
     AutoDetectProxy *auto_detect_proxy =
         static_cast<rtc::AutoDetectProxy *>(thread);
     EXPECT_TRUE(auto_detect_proxy == auto_detect_proxy_);
-    auto_detect_proxy_ = NULL;
+    auto_detect_proxy_ = nullptr;
     auto_detect_proxy->Release();
     done_ = true;
   }
 
   AutoDetectProxy *auto_detect_proxy_;
   bool done_;
 };
 
 TEST_F(AutoDetectProxyTest, TestDetectUnresolvedProxy) {
   TestCopesWithProxy(rtc::SocketAddress("localhost", 9999));
@@ skipping 18 matching lines @@
   ASSERT_TRUE(Create(kUserAgent,
                      kPath,
                      kHost,
                      kPort,
                      kSecure,
                      true));
   ASSERT_TRUE(Run(kTimeoutMs));
 }
 
 }  // namespace rtc