Replace NULL with nullptr in all C++ files.

webrtc/pc/externalhmac.cc

 /*
  *  Copyright 2014 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 19 matching lines @@
 
 static const uint8_t kExternalHmacTestCase0Data[8] = {
   0x48, 0x69, 0x20, 0x54, 0x68, 0x65, 0x72, 0x65   // "Hi There"
 };
 
 static const uint8_t kExternalHmacFakeTag[10] = {
   0xba, 0xdd, 0xba, 0xdd, 0xba, 0xdd, 0xba, 0xdd, 0xba, 0xdd
 };
 
 static const srtp_auth_test_case_t kExternalHmacTestCase0 = {
-  20,                                                    // Octets in key
-  const_cast<uint8_t*>(kExternalHmacTestCase0Key),   // Key
-  8,                                                     // Octets in data
-  const_cast<uint8_t*>(kExternalHmacTestCase0Data),  // Data
-  10,                                                    // Octets in tag
-  const_cast<uint8_t*>(kExternalHmacFakeTag),          // Tag
-  NULL                                                   // Pointer to next
-                                                         // testcase
+    20,                                                // Octets in key
+    const_cast<uint8_t*>(kExternalHmacTestCase0Key),   // Key
+    8,                                                 // Octets in data
+    const_cast<uint8_t*>(kExternalHmacTestCase0Data),  // Data
+    10,                                                // Octets in tag
+    const_cast<uint8_t*>(kExternalHmacFakeTag),        // Tag
+    nullptr                                            // Pointer to next
+                                                       // testcase
 };
 
 static const char kExternalHmacDescription[] =
     "external hmac sha-1 authentication";
 
 // srtp_auth_type_t external_hmac is the hmac metaobject
 
 static const srtp_auth_type_t external_hmac  = {
   external_hmac_alloc,
   external_hmac_dealloc,
@@ skipping 15 matching lines @@
   // than 20 bytes yet
   if (key_len > 20)
     return srtp_err_status_bad_param;
 
   // Check output length - should be less than 20 bytes/
   if (out_len > 20)
     return srtp_err_status_bad_param;
 
   // Allocate memory for auth and hmac_ctx_t structures.
   pointer = new uint8_t[(sizeof(ExternalHmacContext) + sizeof(srtp_auth_t))];
-  if (pointer == NULL)
+  if (pointer == nullptr)
     return srtp_err_status_alloc_fail;
 
   // Set pointers
   *a = (srtp_auth_t *)pointer;
   // |external_hmac| is const and libsrtp expects |type| to be non-const.
   // const conversion is required. |external_hmac| is constant because we don't
   // want to increase global count in Chrome.
   (*a)->type = const_cast<srtp_auth_type_t*>(&external_hmac);
   (*a)->state = pointer + sizeof(srtp_auth_t);
   (*a)->out_len = out_len;
@@ skipping 51 matching lines @@
       const_cast<srtp_auth_type_t*>(&external_hmac), EXTERNAL_HMAC_SHA1);
   if (status) {
     LOG(LS_ERROR) << "Error in replacing default auth module, error: "
                   << status;
     return srtp_err_status_fail;
   }
   return srtp_err_status_ok;
 }
 
 #endif  // defined(HAVE_SRTP) && defined(ENABLE_EXTERNAL_AUTH)