Fix IWYU violators that don't include scoped_ptr.h in Windows build.

google_apis/gaia/gaia_auth_util.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 "google_apis/gaia/gaia_auth_util.h"
 
 #include <stddef.h>
 
 #include "base/json/json_reader.h"
 #include "base/logging.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
 #include "base/values.h"
 #include "google_apis/gaia/gaia_urls.h"
 #include "url/gurl.h"
 
 namespace gaia {
 
 namespace {
 
@@ skipping 138 matching lines @@
           accounts->push_back(listed_account);
         }
       }
     }
   }
 
   return true;
 }
 
 }  // namespace gaia