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

chrome/browser/supervised_user/supervised_user_site_list.h

 // Copyright 2014 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.
 
 #ifndef CHROME_BROWSER_SUPERVISED_USER_SUPERVISED_USER_SITE_LIST_H_
 #define CHROME_BROWSER_SUPERVISED_USER_SUPERVISED_USER_SITE_LIST_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 28 matching lines @@
 // SupervisedUserURLFilter then acts as a big whitelist which is the union of
 // all the whitelists.
 class SupervisedUserSiteList
     : public base::RefCountedThreadSafe<SupervisedUserSiteList> {
  public:
   class HostnameHash {
    public:
     explicit HostnameHash(const std::string& hostname);
     // |bytes| must have a size of at least |base::kSHA1Length|.
     explicit HostnameHash(const std::vector<uint8_t>& bytes);
+    HostnameHash(const HostnameHash& other);
 
     bool operator==(const HostnameHash& rhs) const;
 
     // Returns a hash code suitable for putting this into hash maps.
     size_t hash() const;
 
    private:
     std::array<uint8_t, base::kSHA1Length> bytes_;
     // Copy and assign are allowed.
   };
@@ skipping 52 matching lines @@
   // A list of URL patterns that should be whitelisted.
   std::vector<std::string> patterns_;
 
   // A list of SHA1 hashes of hostnames that should be whitelisted.
   std::vector<HostnameHash> hostname_hashes_;
 
   DISALLOW_COPY_AND_ASSIGN(SupervisedUserSiteList);
 };
 
 #endif  // CHROME_BROWSER_SUPERVISED_USER_SUPERVISED_USER_SITE_LIST_H_