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

chrome/browser/extensions/api/identity/identity_api.cc

 // Copyright (c) 2012 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/browser/extensions/api/identity/identity_api.h"
 
 #include <stddef.h>
 
 #include <set>
 #include <string>
@@ skipping 103 matching lines @@
   // to live any time they are returned.
   time_to_live -= base::TimeDelta::FromMinutes(20);
 
   base::TimeDelta zero_delta;
   if (time_to_live < zero_delta)
     time_to_live = zero_delta;
 
   expiration_time_ = base::Time::Now() + time_to_live;
 }
 
+IdentityTokenCacheValue::IdentityTokenCacheValue(
+    const IdentityTokenCacheValue& other) = default;
+
 IdentityTokenCacheValue::~IdentityTokenCacheValue() {}
 
 IdentityTokenCacheValue::CacheValueStatus IdentityTokenCacheValue::status()
     const {
   if (is_expired())
     return IdentityTokenCacheValue::CACHE_STATUS_NOTFOUND;
   else
     return status_;
 }
 
@@ skipping 877 matching lines @@
   if (redirect_url.GetWithEmptyPath() == final_url_prefix_) {
     SetResult(new base::StringValue(redirect_url.spec()));
     SendResponse(true);
     if (auth_flow_)
       auth_flow_.release()->DetachDelegateAndDelete();
     Release();  // Balanced in RunAsync.
   }
 }
 
 }  // namespace extensions