Rewrite scoped_ptr<T>(NULL) to use the default ctor in net/.

net/quic/quic_stream_factory.cc

 // Copyright (c) 2012 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 "net/quic/quic_stream_factory.h"
 
 #include <set>
 
 #include "base/message_loop.h"
 #include "base/message_loop/message_loop_proxy.h"
@@ skipping 134 matching lines @@
 int QuicStreamFactory::Job::DoResolveHostComplete(int rv) {
   if (rv != OK)
     return rv;
 
   DCHECK(!factory_->HasActiveSession(host_port_proxy_pair_));
   io_state_ = STATE_CONNECT;
   return OK;
 }
 
 QuicStreamRequest::QuicStreamRequest(QuicStreamFactory* factory)
-    : factory_(factory),
-      stream_(NULL){
-}
+    : factory_(factory) {}
 
 QuicStreamRequest::~QuicStreamRequest() {
   if (factory_ && !callback_.is_null())
     factory_->CancelRequest(this);
 }
 
 int QuicStreamRequest::Request(
     const HostPortProxyPair& host_port_proxy_pair,
     const BoundNetLog& net_log,
     const CompletionCallback& callback) {
@@ skipping 124 matching lines @@
   delete job;
   return;
 }
 
 // Returns a newly created QuicHttpStream owned by the caller, if a
 // matching session already exists.  Returns NULL otherwise.
 scoped_ptr<QuicHttpStream> QuicStreamFactory::CreateIfSessionExists(
     const HostPortProxyPair& host_port_proxy_pair,
     const BoundNetLog& net_log) {
   if (!HasActiveSession(host_port_proxy_pair)) {
-    return scoped_ptr<QuicHttpStream>(NULL);
+    return scoped_ptr<QuicHttpStream>();
   }
 
   QuicClientSession* session = active_sessions_[host_port_proxy_pair];
   DCHECK(session);
   return scoped_ptr<QuicHttpStream>(
       new QuicHttpStream(session->CreateOutgoingReliableStream()));
 }
 
 void QuicStreamFactory::OnIdleSession(QuicClientSession* session) {
 }
@@ skipping 105 matching lines @@
     DCHECK(crypto_config);
   } else {
     crypto_config = new QuicCryptoClientConfig();
     crypto_config->SetDefaults();
     all_crypto_configs_[host_port_proxy_pair] = crypto_config;
   }
   return crypto_config;
 }
 
 }  // namespace net