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

chrome/browser/extensions/install_signer.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 "chrome/browser/extensions/install_signer.h"
 
 #include <stddef.h>
 #include <stdint.h>
 #include <utility>
 
@@ skipping 142 matching lines @@
   }
   return true;
 }
 
 }  // namespace
 
 namespace extensions {
 
 InstallSignature::InstallSignature() {
 }
+InstallSignature::InstallSignature(const InstallSignature& other) = default;
 InstallSignature::~InstallSignature() {
 }
 
 void InstallSignature::ToValue(base::DictionaryValue* value) const {
   CHECK(value);
 
   value->SetInteger(kSignatureFormatVersionKey, kSignatureFormatVersion);
   SetExtensionIdSet(value, kIdsKey, ids);
   SetExtensionIdSet(value, kInvalidIdsKey, invalid_ids);
   value->SetString(kExpireDateKey, expire_date);
@@ skipping 333 matching lines @@
     if (!verified)
       result.reset();
   }
 
   if (!callback_.is_null())
     callback_.Run(std::move(result));
 }
 
 
 }  // namespace extensions