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

components/search_engines/keyword_web_data_service.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 "components/search_engines/keyword_web_data_service.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/single_thread_task_runner.h"
 #include "components/search_engines/keyword_table.h"
 #include "components/search_engines/template_url_data.h"
 #include "components/webdata/common/web_data_results.h"
 #include "components/webdata/common/web_database_service.h"
 
 using base::Bind;
 
 WDKeywordsResult::WDKeywordsResult()
   : default_search_provider_id(0),
     builtin_keyword_version(0) {
 }
 
+WDKeywordsResult::WDKeywordsResult(const WDKeywordsResult& other) = default;
+
 WDKeywordsResult::~WDKeywordsResult() {}
 
 KeywordWebDataService::BatchModeScoper::BatchModeScoper(
     KeywordWebDataService* service)
     : service_(service) {
   if (service_)
     service_->AdjustBatchModeLevel(true);
 }
 
 KeywordWebDataService::BatchModeScoper::~BatchModeScoper() {
@@ skipping 109 matching lines @@
   return KeywordTable::FromWebDatabase(db)->SetDefaultSearchProviderID(id) ?
       WebDatabase::COMMIT_NEEDED : WebDatabase::COMMIT_NOT_NEEDED;
 }
 
 WebDatabase::State KeywordWebDataService::SetBuiltinKeywordVersionImpl(
     int version,
     WebDatabase* db) {
   return KeywordTable::FromWebDatabase(db)->SetBuiltinKeywordVersion(version) ?
       WebDatabase::COMMIT_NEEDED : WebDatabase::COMMIT_NOT_NEEDED;
 }