Remove use of stl_util's STLDeleteContainerPairSecondPointers from content/.

content/browser/renderer_host/p2p/socket_host_test_utils.cc

 // Copyright (c) 2013 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 "content/browser/renderer_host/p2p/socket_host_test_utils.h"
 
 #include <stddef.h>
 
 #include "base/logging.h"
 #include "base/sys_byteorder.h"
@@ skipping 24 matching lines @@
 void FakeSocket::AppendInputData(const char* data, int data_size) {
   input_data_.insert(input_data_.end(), data, data + data_size);
   // Complete pending read if any.
   if (read_pending_) {
     read_pending_ = false;
     int result = std::min(read_buffer_size_,
                           static_cast<int>(input_data_.size() - input_pos_));
     CHECK(result > 0);
     memcpy(read_buffer_->data(), &input_data_[0] + input_pos_, result);
     input_pos_ += result;
-    read_buffer_ = NULL;
+    read_buffer_ = nullptr;
     net::CompletionCallback cb = read_callback_;
     read_callback_.Reset();
     cb.Run(result);
   }
 }
 
 void FakeSocket::SetPeerAddress(const net::IPEndPoint& peer_address) {
   peer_address_ = peer_address;
 }
 
@@ skipping 155 matching lines @@
 
 void CreateStunError(std::vector<char>* packet) {
   CreateStunPacket(packet, kStunBindingError);
 }
 
 net::IPEndPoint ParseAddress(const std::string& ip_str, uint16_t port) {
   net::IPAddress ip;
   EXPECT_TRUE(ip.AssignFromIPLiteral(ip_str));
   return net::IPEndPoint(ip, port);
 }