Coverity: Pass values by reference.

chrome/browser/net/url_info.h

 // Copyright (c) 2010 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 UrlInfo object is used to store prediction related information about a host
 // port and scheme triplet.  When performing DNS pre-resolution of the host/port
 // pair, its state is monitored as it is resolved.
 // It includes progress, from placement in the Predictor's queue, to resolution
 // by the DNS service as either FOUND or NO_SUCH_NAME.  Each instance may also
 // hold records of previous resolution times, which might later be shown to be
@@ skipping 105 matching lines @@
 
   bool HasUrl(const GURL& url) const {
     return url_ == url;
   }
 
   base::TimeDelta resolve_duration() const { return resolve_duration_;}
   base::TimeDelta queue_duration() const { return queue_duration_;}
 
   void DLogResultsStats(const char* message) const;
 
-  static void GetHtmlTable(const UrlInfoTable host_infos,
+  static void GetHtmlTable(const UrlInfoTable& host_infos,
                            const char* description,
-                           const bool brief,
+                           bool brief,
                            std::string* output);
 
   // For testing, and use in printing tables of info, we sometimes need to
   // adjust the time manually.  Usually, this value is maintained by state
   // transition, and this call is not made.
   void set_time(const base::TimeTicks& time) { time_ = time; }
 
  private:
   base::TimeDelta GetDuration() {
     base::TimeTicks old_time = time_;
@@ skipping 45 matching lines @@
   GURL referring_url_;
 
   // We put these objects into a std::map, and hence we
   // need some "evil" constructors.
   // DISALLOW_COPY_AND_ASSIGN(UrlInfo);
 };
 
 }  // namespace chrome_browser_net
 
 #endif  // CHROME_BROWSER_NET_URL_INFO_H_