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

chrome/browser/extensions/bundle_installer.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/bundle_installer.h"
 
 #include <algorithm>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 74 matching lines @@
 }  // namespace
 
 // static
 void BundleInstaller::SetAutoApproveForTesting(bool auto_approve) {
   CHECK(base::CommandLine::ForCurrentProcess()->HasSwitch(switches::kTestType));
   g_auto_approve_for_test = auto_approve ? PROCEED : ABORT;
 }
 
 BundleInstaller::Item::Item() : state(STATE_PENDING) {}
 
+BundleInstaller::Item::Item(const Item& other) = default;
+
 BundleInstaller::Item::~Item() {}
 
 base::string16 BundleInstaller::Item::GetNameForDisplay() const {
   base::string16 name = base::UTF8ToUTF16(localized_name);
   base::i18n::AdjustStringForLocaleDirection(&name);
   return name;
 }
 
 BundleInstaller::BundleInstaller(Browser* browser,
                                  const std::string& name,
@@ skipping 268 matching lines @@
 
   ShowInstalledBubbleIfDone();
 }
 
 void BundleInstaller::OnBrowserRemoved(Browser* browser) {
   if (browser_ == browser)
     browser_ = nullptr;
 }
 
 }  // namespace extensions