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

components/drive/sync_client.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 "components/drive/sync_client.h"
 
 #include <stddef.h>
 
 #include <vector>
 
@@ skipping 117 matching lines @@
   FileError error = metadata->GetResourceEntryById(local_id, &entry);
   if (error != FILE_ERROR_OK)
     return error;
   return metadata->GetResourceEntryById(entry.parent_local_id(), parent);
 }
 
 }  // namespace
 
 SyncClient::SyncTask::SyncTask()
     : state(SUSPENDED), context(BACKGROUND), should_run_again(false) {}
+SyncClient::SyncTask::SyncTask(const SyncTask& other) = default;
 SyncClient::SyncTask::~SyncTask() {}
 
 SyncClient::SyncClient(base::SequencedTaskRunner* blocking_task_runner,
                        file_system::OperationDelegate* delegate,
                        JobScheduler* scheduler,
                        ResourceMetadata* metadata,
                        FileCache* cache,
                        LoaderController* loader_controller,
                        const base::FilePath& temporary_file_directory)
     : blocking_task_runner_(blocking_task_runner),
@@ skipping 340 matching lines @@
     base::PostTaskAndReplyWithResult(
         blocking_task_runner_.get(),
         FROM_HERE,
         base::Bind(&FileCache::Unpin, base::Unretained(cache_), local_id),
         base::Bind(&util::EmptyFileOperationCallback));
   }
 }
 
 }  // namespace internal
 }  // namespace drive