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

components/signin/core/browser/signin_header_helper.h

 // Copyright 2013 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_SIGNIN_CORE_BROWSER_SIGNIN_HEADER_HELPER_H_
 #define COMPONENTS_SIGNIN_CORE_BROWSER_SIGNIN_HEADER_HELPER_H_
 
 #include <string>
 
 #include "build/build_config.h"  // For OS_IOS
@@ skipping 48 matching lines @@
 
 // iOS has no notion of route and child IDs.
 #if !defined(OS_IOS)
   // The child id associated with the web content of the request.
   int child_id;
   // The route id associated with the web content of the request.
   int route_id;
 #endif  // !defined(OS_IOS)
 
   ManageAccountsParams();
+  ManageAccountsParams(const ManageAccountsParams& other);
 };
 
 // Returns true if signin cookies are allowed.
 bool SettingsAllowSigninCookies(
     const content_settings::CookieSettings* cookie_settings);
 
 // Returns the X-CHROME-CONNECTED cookie, or an empty string if it should not be
 // added to the request to |url|.
 std::string BuildMirrorRequestCookieIfPossible(
     const GURL& url,
@@ skipping 18 matching lines @@
 // Returns the parameters contained in the X-Chrome-Manage-Accounts response
 // header.
 // If the request does not have a response header or if the header contains
 // garbage, then |service_type| is set to |GAIA_SERVICE_TYPE_NONE|.
 ManageAccountsParams BuildManageAccountsParamsIfExists(net::URLRequest* request,
                                                        bool is_off_the_record);
 
 }  // namespace signin
 
 #endif  // COMPONENTS_SIGNIN_CORE_BROWSER_SIGNIN_HEADER_HELPER_H_