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

components/domain_reliability/beacon.h

 // Copyright 2014 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 COMPONENTS_DOMAIN_RELIABILITY_BEACON_H_
 #define COMPONENTS_DOMAIN_RELIABILITY_BEACON_H_
 
 #include <string>
 
 #include "base/memory/scoped_vector.h"
 #include "base/time/time.h"
 #include "components/domain_reliability/domain_reliability_export.h"
 #include "net/base/net_error_details.h"
 #include "url/gurl.h"
 
 namespace base {
 class Value;
 }  // namespace base
 
 namespace domain_reliability {
 
 // The per-request data that is uploaded to the Domain Reliability collector.
 struct DOMAIN_RELIABILITY_EXPORT DomainReliabilityBeacon {
  public:
   DomainReliabilityBeacon();
+  DomainReliabilityBeacon(const DomainReliabilityBeacon& other);
   ~DomainReliabilityBeacon();
 
   // Converts the Beacon to JSON format for uploading. Calculates the age
   // relative to an upload time of |upload_time|.
   //
   // |last_network_change_time| is used to determine which beacons are
   // labeled as from a previous network connection.
   // |collector_url| is compared to the URLs in the beacons to determine which
   // are being uploaded to a same-origin collector.
   // |path_prefixes| are used to include only a known-safe (not PII) prefix of
@@ skipping 36 matching lines @@
   int upload_depth;
   // The probability that this request had of being reported ("sample rate").
   double sample_rate;
 
   // Okay to copy and assign.
 };
 
 }  // namespace domain_reliability
 
 #endif  // COMPONENTS_DOMAIN_RELIABILITY_BEACON_H_