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

chrome/browser/extensions/chrome_app_sorting.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/chrome_app_sorting.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/macros.h"
@@ skipping 29 matching lines @@
 const char kPrefPageIndexDeprecated[] = "page_index";
 const char kPrefPageOrdinal[] = "page_ordinal";
 
 }  // namespace
 
 ////////////////////////////////////////////////////////////////////////////////
 // ChromeAppSorting::AppOrdinals
 
 ChromeAppSorting::AppOrdinals::AppOrdinals() {}
 
+ChromeAppSorting::AppOrdinals::AppOrdinals(const AppOrdinals& other) = default;
+
 ChromeAppSorting::AppOrdinals::~AppOrdinals() {}
 
 ////////////////////////////////////////////////////////////////////////////////
 // ChromeAppSorting
 
 ChromeAppSorting::ChromeAppSorting(content::BrowserContext* browser_context)
     : browser_context_(browser_context),
       default_ordinals_created_(false) {
   ExtensionIdList extensions;
   ExtensionPrefs::Get(browser_context_)->GetExtensions(&extensions);
@@ skipping 556 matching lines @@
   for (AppLaunchOrdinalMap::const_iterator it = m.begin(); it != m.end();
        ++it) {
     const std::string& id = it->second;
     if (ntp_hidden_extensions_.count(id) == 0)
       result++;
   }
   return result;
 }
 
 }  // namespace extensions