chrome: Add out-of-line copy ctors for complex classes.

chrome/browser/net/url_info.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 "chrome/browser/net/url_info.h"
 
 #include <ctype.h>
 #include <math.h>
 #include <stddef.h>
 #include <stdint.h>
@@ skipping 62 matching lines @@
 UrlInfo::UrlInfo()
     : state_(PENDING),
       old_prequeue_state_(state_),
       resolve_duration_(NullDuration()),
       queue_duration_(NullDuration()),
       sequence_number_(0),
       motivation_(NO_PREFETCH_MOTIVATION),
       was_linked_(false) {
 }
 
+UrlInfo::UrlInfo(const UrlInfo& other) = default;
+
 UrlInfo::~UrlInfo() {}
 
 bool UrlInfo::NeedsDnsUpdate() {
   switch (state_) {
     case PENDING:  // Just now created info.
       return true;
 
     case QUEUED:  // In queue.
     case ASSIGNED:  // It's being resolved.
     case ASSIGNED_BUT_MARKED:  // It's being resolved.
@@ skipping 277 matching lines @@
 
     case LEARNED_REFERAL_MOTIVATED:
       return RemoveJs(referring_url_.spec());
 
     default:
       return std::string();
   }
 }
 
 }  // namespace chrome_browser_net