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

net/url_request/url_fetcher_impl_unittest.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/url_request/url_fetcher_impl.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/bind.h"
@@ skipping 64 matching lines @@
   virtual ~ThrottlingTestURLRequestContextGetter() {}
 
   TestURLRequestContext* const context_;
 };
 
 }  // namespace
 
 class URLFetcherTest : public testing::Test,
                        public URLFetcherDelegate {
  public:
-  URLFetcherTest()
-      : fetcher_(NULL),
-        context_(NULL) {
-  }
+  URLFetcherTest() : fetcher_(NULL) {}
 
   static int GetNumFetcherCores() {
     return URLFetcherImpl::GetNumFetcherCores();
   }
 
   // Creates a URLFetcher, using the program's main thread to do IO.
   virtual void CreateFetcher(const GURL& url);
 
   // URLFetcherDelegate:
   // Subclasses that override this should either call this function or
@@ skipping 1424 matching lines @@
   base::MessageLoop::current()->Run();  // OnURLFetchComplete() will Quit().
 
   base::MessageLoop::current()->RunUntilIdle();
   ASSERT_FALSE(file_util::PathExists(file_path_)) << file_path_.value()
                                                   << " not removed.";
 }
 
 }  // namespace
 
 }  // namespace net