Reduce number of unnamed-type-template-args violations.

chrome/browser/net/predictor.h

 // Copyright (c) 2011 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.
 
 // A Predictor object is instantiated once in the browser process, and manages
 // both preresolution of hostnames, as well as TCP/IP preconnection to expected
 // subresources.
 // Most hostname lists are provided by the renderer processes, and include URLs
 // that *might* be used in the near future by the browsing user.  One goal of
 // this class is to cause the underlying DNS structure to lookup a hostname
@@ skipping 35 matching lines @@
 typedef chrome_common_net::UrlList UrlList;
 typedef chrome_common_net::NameList NameList;
 typedef std::map<GURL, UrlInfo> Results;
 
 // Note that Predictor is not thread safe, and must only be called from
 // the IO thread. Failure to do so will result in a DCHECK at runtime.
 class Predictor : public base::RefCountedThreadSafe<Predictor> {
  public:
   // A version number for prefs that are saved. This should be incremented when
   // we change the format so that we discard old data.
-  enum { PREDICTOR_REFERRER_VERSION = 2 };
+  static const int kPredictorReferrerVersion;
 
   // |max_concurrent| specifies how many concurrent (parallel) prefetches will
   // be performed. Host lookups will be issued through |host_resolver|.
   Predictor(net::HostResolver* host_resolver,
             base::TimeDelta max_queue_delay_ms, size_t max_concurrent,
             bool preconnect_enabled);
 
   // Cancel pending requests and prevent new ones from being made.
   void Shutdown();
 
@@ skipping 268 matching lines @@
   base::TimeTicks next_trim_time_;
 
   ScopedRunnableMethodFactory<Predictor> trim_task_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(Predictor);
 };
 
 }  // namespace chrome_browser_net
 
 #endif  // CHROME_BROWSER_NET_PREDICTOR_H_