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

components/signin/core/browser/signin_header_helper.cc

 // 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.
 
 #include "components/signin/core/browser/signin_header_helper.h"
 
 #include <stddef.h>
 
 #include "base/macros.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 125 matching lines @@
       email(""),
       is_saml(false),
       continue_url(""),
       is_same_tab(false) {
 #if !defined(OS_IOS)
   child_id = 0;
   route_id = 0;
 #endif  // !defined(OS_IOS)
 }
 
+ManageAccountsParams::ManageAccountsParams(const ManageAccountsParams& other) =
+    default;
+
 bool SettingsAllowSigninCookies(
     const content_settings::CookieSettings* cookie_settings) {
   GURL gaia_url = GaiaUrls::GetInstance()->gaia_url();
   GURL google_url = GaiaUrls::GetInstance()->google_url();
   return cookie_settings &&
          cookie_settings->IsSettingCookieAllowed(gaia_url, gaia_url) &&
          cookie_settings->IsSettingCookieAllowed(google_url, google_url);
 }
 
 std::string BuildMirrorRequestCookieIfPossible(
@@ skipping 58 matching lines @@
   if (!request->response_headers()->GetNormalizedHeader(
           kChromeManageAccountsHeader, &header_value)) {
     return empty_params;
   }
 
   DCHECK(switches::IsEnableAccountConsistency() && !is_off_the_record);
   return BuildManageAccountsParams(header_value);
 }
 
 }  // namespace signin