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

chrome/common/extensions/permissions/chrome_permission_message_rules.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_COMMON_EXTENSIONS_PERMISSIONS_CHROME_PERMISSION_MESSAGE_RULES_H_
 #define CHROME_COMMON_EXTENSIONS_PERMISSIONS_CHROME_PERMISSION_MESSAGE_RULES_H_
 
 #include <set>
 #include <vector>
 
@@ skipping 36 matching lines @@
 // any |optional| permissions are present, they are also 'absorbed' by the rule
 // to generate the final coalesced message.
 // An optional |formatter| can be provided, which decides how the final
 // PermissionMessage appears. The default formatter simply displays the message
 // with the ID |message_id|.
 // Once a permission is used in a rule, it cannot apply to any future rules.
 // TODO(sashab): Move all ChromePermissionMessageFormatters to their own
 // provider class and remove ownership from ChromePermissionMessageRule.
 class ChromePermissionMessageRule {
  public:
+  ChromePermissionMessageRule(const ChromePermissionMessageRule& other);
   virtual ~ChromePermissionMessageRule();
 
   // Returns all the rules used to generate permission messages for Chrome apps
   // and extensions.
   static std::vector<ChromePermissionMessageRule> GetAllRules();
 
   std::set<APIPermission::ID> required_permissions() const;
   std::set<APIPermission::ID> optional_permissions() const;
   std::set<APIPermission::ID> all_permissions() const;
 
@@ skipping 17 matching lines @@
   std::set<APIPermission::ID> optional_permissions_;
 
   // Owned by this class. linked_ptr is needed because this object is copyable
   // and stored in a returned vector.
   linked_ptr<ChromePermissionMessageFormatter> formatter_;
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_COMMON_EXTENSIONS_PERMISSIONS_CHROME_PERMISSION_MESSAGE_RULES_H_