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

chrome/common/extensions/permissions/chrome_permission_message_rules.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 "chrome/common/extensions/permissions/chrome_permission_message_rules.h"
 
 #include "base/macros.h"
 #include "base/stl_util.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 276 matching lines @@
 ChromePermissionMessageRule::ChromePermissionMessageRule(
     ChromePermissionMessageFormatter* formatter,
     const PermissionIDSetInitializer& required,
     const PermissionIDSetInitializer& optional)
     : required_permissions_(required),
       optional_permissions_(optional),
       formatter_(formatter) {
   DCHECK(!required_permissions_.empty());
 }
 
+ChromePermissionMessageRule::ChromePermissionMessageRule(
+    const ChromePermissionMessageRule& other) = default;
+
 ChromePermissionMessageRule::~ChromePermissionMessageRule() {
 }
 
 std::set<APIPermission::ID> ChromePermissionMessageRule::required_permissions()
     const {
   return required_permissions_;
 }
 std::set<APIPermission::ID> ChromePermissionMessageRule::optional_permissions()
     const {
   return optional_permissions_;
@@ skipping 343 matching lines @@
       {IDS_EXTENSION_PROMPT_WARNING_DISPLAY_SOURCE,
        {APIPermission::kDisplaySource},
        {}},
   };
 
   return std::vector<ChromePermissionMessageRule>(
       rules_arr, rules_arr + arraysize(rules_arr));
 }
 
 }  // namespace extensions