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

chrome/browser/browsing_data/cookies_tree_model.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/browsing_data/cookies_tree_model.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <functional>
@@ skipping 157 matching lines @@
       node->parent()->parent());
   CHECK_EQ(host->GetDetailedInfo().node_type,
            CookieTreeNode::DetailedInfo::TYPE_HOST);
   return node->GetModel()->data_container();
 }
 
 }  // namespace
 
 CookieTreeNode::DetailedInfo::DetailedInfo() : node_type(TYPE_NONE) {}
 
+CookieTreeNode::DetailedInfo::DetailedInfo(const DetailedInfo& other) = default;
+
 CookieTreeNode::DetailedInfo::~DetailedInfo() {}
 
 CookieTreeNode::DetailedInfo& CookieTreeNode::DetailedInfo::Init(
     NodeType type) {
   DCHECK_EQ(TYPE_NONE, node_type);
   node_type = type;
   return *this;
 }
 
 CookieTreeNode::DetailedInfo& CookieTreeNode::DetailedInfo::InitHost() {
@@ skipping 1358 matching lines @@
 void CookiesTreeModel::MaybeNotifyBatchesEnded() {
   // Only notify the observers if this is the outermost call to EndBatch() if
   // called in a nested manner.
   if (batches_ended_ == batches_started_ &&
       batches_seen_ == batches_expected_) {
     FOR_EACH_OBSERVER(Observer,
                       cookies_observer_list_,
                       TreeModelEndBatch(this));
   }
 }