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

components/drive/drive_app_registry.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/drive/drive_app_registry.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <set>
@@ skipping 53 matching lines @@
     bool is_removable)
     : app_id(app_id),
       product_id(product_id),
       app_icons(app_icons),
       document_icons(document_icons),
       app_name(app_name),
       create_url(create_url),
       is_removable(is_removable) {
 }
 
+DriveAppInfo::DriveAppInfo(const DriveAppInfo& other) = default;
+
 DriveAppInfo::~DriveAppInfo() {
 }
 
 DriveAppRegistry::DriveAppRegistry(DriveServiceInterface* drive_service)
     : drive_service_(drive_service),
       is_updating_(false),
       weak_ptr_factory_(this) {
 }
 
 DriveAppRegistry::~DriveAppRegistry() {
@@ skipping 155 matching lines @@
 
   // Go forward while the size is larger or equal to preferred_size.
   size_t i = 1;
   while (i < sorted_icons.size() && sorted_icons[i].first >= preferred_size)
     ++i;
   return sorted_icons[i - 1].second;
 }
 
 }  // namespace util
 }  // namespace drive