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

chrome/browser/media_galleries/gallery_watch_manager.h

 // 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.
 
 #ifndef CHROME_BROWSER_MEDIA_GALLERIES_GALLERY_WATCH_MANAGER_H_
 #define CHROME_BROWSER_MEDIA_GALLERIES_GALLERY_WATCH_MANAGER_H_
 
 #include <map>
 #include <string>
 
@@ skipping 79 matching lines @@
     content::BrowserContext* browser_context;
     const std::string extension_id;
     MediaGalleryPrefId gallery_id;
 
     // Needed to support storage in STL set, as well as usage as map key.
     bool operator<(const WatchOwner& other) const;
   };
 
   struct NotificationInfo {
     NotificationInfo();
+    NotificationInfo(const NotificationInfo& other);
     ~NotificationInfo();
 
     std::set<WatchOwner> owners;
     base::Time last_notify_time;
     bool delayed_notification_pending;
   };
 
   typedef std::map<WatchOwner, base::FilePath> WatchesMap;
   typedef std::map<base::FilePath, NotificationInfo> WatchedPaths;
   typedef std::map<content::BrowserContext*, GalleryWatchManagerObserver*>
@@ skipping 53 matching lines @@
   // Removes watches when a browser context is shut down as watches contain raw
   // pointers.
   BrowserContextSubscriptionMap browser_context_subscription_map_;
 
   base::WeakPtrFactory<GalleryWatchManager> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GalleryWatchManager);
 };
 
 #endif  // CHROME_BROWSER_MEDIA_GALLERIES_GALLERY_WATCH_MANAGER_H_