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

components/autofill/core/browser/legal_message_line.cc

 // Copyright 2016 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 "components/autofill/core/browser/legal_message_line.h"
 
 #include "base/i18n/message_formatter.h"
 #include "base/logging.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 55 matching lines @@
 
 LegalMessageLine::Link::Link(size_t start,
                              size_t end,
                              const std::string& url_spec)
     : range(start, end), url(url_spec) {}
 
 LegalMessageLine::Link::~Link() {}
 
 LegalMessageLine::LegalMessageLine() {}
 
+LegalMessageLine::LegalMessageLine(const LegalMessageLine& other) = default;
+
 LegalMessageLine::~LegalMessageLine() {}
 
 // static
 bool LegalMessageLine::Parse(const base::DictionaryValue& legal_message,
                              LegalMessageLines* out) {
   const base::ListValue* lines_list = nullptr;
   if (legal_message.GetList("line", &lines_list)) {
     LegalMessageLines lines;
     lines.reserve(lines_list->GetSize());
     for (size_t i = 0; i < lines_list->GetSize(); ++i) {
@@ skipping 57 matching lines @@
   for (size_t offset_index = 0; offset_index < offsets.size(); ++offset_index) {
     size_t range_start = offsets[offset_index];
     links_[offset_index].range = gfx::Range(
         range_start, range_start + display_texts[offset_index].size());
   }
 
   return true;
 }
 
 }  // namespace autofill