Include std vector (include what you use) in spdy_priority_forest.h

net/spdy/spdy_priority_forest.h

 // 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.
 
 #ifndef NET_SPDY_SPDY_PRIORITY_FOREST_H_
 #define NET_SPDY_SPDY_PRIORITY_FOREST_H_
 
 #include <map>
 #include <set>
+#include <vector>
 
 #include "base/basictypes.h"
 #include "base/containers/hash_tables.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/rand_util.h"
 
 namespace net {
 
 // This data structure implements the SPDY prioriziation data structures
@@ skipping 498 matching lines @@
       child_id = GetChild(child_id);
       ++count;
     }
   }
   return true;
 }
 
 }  // namespace net
 
 #endif  // NET_SPDY_SPDY_PRIORITY_FOREST_H_