Avoid large inlined automatic methods in IndexedDB code.

content/common/indexed_db/indexed_db_key.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 "content/common/indexed_db/indexed_db_key.h"
 
 #include <string>
 #include "base/logging.h"
 
 namespace content {
@@ skipping 74 matching lines @@
       binary_(binary),
       size_estimate_(kOverheadSize +
                      (binary.length() * sizeof(std::string::value_type))) {}
 
 IndexedDBKey::IndexedDBKey(const base::string16& string)
     : type_(WebIDBKeyTypeString),
       string_(string),
       size_estimate_(kOverheadSize +
                      (string.length() * sizeof(base::string16::value_type))) {}
 
-IndexedDBKey::~IndexedDBKey() {}
+IndexedDBKey::IndexedDBKey(const IndexedDBKey& other) = default;
+IndexedDBKey::~IndexedDBKey() = default;
+IndexedDBKey& IndexedDBKey::operator=(const IndexedDBKey& other) = default;
 
 bool IndexedDBKey::IsValid() const {
   if (type_ == WebIDBKeyTypeInvalid || type_ == WebIDBKeyTypeNull)
     return false;
 
   if (type_ == WebIDBKeyTypeArray) {
     for (size_t i = 0; i < array_.size(); i++) {
       if (!array_[i].IsValid())
         return false;
     }
@@ skipping 35 matching lines @@
     case WebIDBKeyTypeInvalid:
     case WebIDBKeyTypeNull:
     case WebIDBKeyTypeMin:
     default:
       NOTREACHED();
       return 0;
   }
 }
 
 }  // namespace content