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

chrome/browser/predictors/resource_prefetch_common.cc

 // 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.
 
 #include "chrome/browser/predictors/resource_prefetch_common.h"
 
 #include <stdlib.h>
 #include <tuple>
 
 #include "base/command_line.h"
@@ skipping 185 matching lines @@
       max_hosts_to_track(200),
       min_url_visit_count(2),
       max_resources_per_entry(50),
       max_consecutive_misses(3),
       min_resource_confidence_to_trigger_prefetch(0.7f),
       min_resource_hits_to_trigger_prefetch(2),
       max_prefetches_inflight_per_navigation(24),
       max_prefetches_inflight_per_host_per_navigation(3) {
 }
 
+ResourcePrefetchPredictorConfig::ResourcePrefetchPredictorConfig(
+    const ResourcePrefetchPredictorConfig& other) = default;
+
 ResourcePrefetchPredictorConfig::~ResourcePrefetchPredictorConfig() {
 }
 
 bool ResourcePrefetchPredictorConfig::IsLearningEnabled() const {
   return IsURLLearningEnabled() || IsHostLearningEnabled();
 }
 
 bool ResourcePrefetchPredictorConfig::IsPrefetchingEnabled(
     Profile* profile) const {
   return IsURLPrefetchingEnabled(profile) || IsHostPrefetchingEnabled(profile);
@@ skipping 43 matching lines @@
 
 bool ResourcePrefetchPredictorConfig::IsMoreResourcesEnabledForTest() const {
   return max_resources_per_entry == 100;
 }
 
 bool ResourcePrefetchPredictorConfig::IsSmallDBEnabledForTest() const {
   return max_urls_to_track == 200 && max_hosts_to_track == 100;
 }
 
 }  // namespace predictors