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

components/guest_view/browser/guest_view_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 COMPONENTS_GUEST_VIEW_BROWSER_GUEST_VIEW_MANAGER_H_
 #define COMPONENTS_GUEST_VIEW_BROWSER_GUEST_VIEW_MANAGER_H_
 
 #include <map>
 #include <set>
 #include <vector>
@@ skipping 214 matching lines @@
   using GuestInstanceIDReverseMap = std::map<int, ElementInstanceKey>;
   GuestInstanceIDReverseMap reverse_instance_id_map_;
 
   using GuestViewCreateFunction =
       base::Callback<GuestViewBase*(content::WebContents*)>;
   using GuestViewCleanUpFunction =
       base::Callback<void(content::BrowserContext*, int, int)>;
   struct GuestViewData {
     GuestViewData(const GuestViewCreateFunction& create_function,
                   const GuestViewCleanUpFunction& cleanup_function);
+    GuestViewData(const GuestViewData& other);
     ~GuestViewData();
     const GuestViewCreateFunction create_function;
     const GuestViewCleanUpFunction cleanup_function;
   };
   using GuestViewMethodMap = std::map<std::string, GuestViewData>;
   GuestViewMethodMap guest_view_registry_;
 
   int current_instance_id_;
 
   // Any instance ID whose number not greater than this was removed via
@@ skipping 23 matching lines @@
   // call into this GuestViewManager after it has been destroyed.
   base::WeakPtrFactory<GuestViewManager> weak_ptr_factory_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(GuestViewManager);
 };
 
 }  // namespace guest_view
 
 #endif  // COMPONENTS_GUEST_VIEW_BROWSER_GUEST_VIEW_MANAGER_H_