IndexedDB: Sprinkle DISALLOW_COPY_AND_ASSIGN where appropriate

content/child/indexed_db/indexed_db_key_builders.h

 // Copyright (c) 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.
 
 #ifndef CONTENT_CHILD_INDEXED_DB_INDEXED_DB_KEY_BUILDERS_H_
 #define CONTENT_CHILD_INDEXED_DB_INDEXED_DB_KEY_BUILDERS_H_
 
 #include "content/common/content_export.h"
 #include "content/common/indexed_db/indexed_db_key.h"
 #include "content/common/indexed_db/indexed_db_key_path.h"
 #include "content/common/indexed_db/indexed_db_key_range.h"
 #include "third_party/WebKit/public/platform/WebIDBKey.h"
 #include "third_party/WebKit/public/platform/WebIDBKeyPath.h"
 #include "third_party/WebKit/public/platform/WebIDBKeyRange.h"
 
 namespace blink {
 class WebIDBKey;
 }
 
 namespace content {
 
 class CONTENT_EXPORT IndexedDBKeyBuilder {
  public:
   static IndexedDBKey Build(const blink::WebIDBKey& key);
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(IndexedDBKeyBuilder);
 };
 
 class CONTENT_EXPORT WebIDBKeyBuilder {
  public:
   static blink::WebIDBKey Build(const content::IndexedDBKey& key);
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(WebIDBKeyBuilder);
 };
 
 class CONTENT_EXPORT IndexedDBKeyRangeBuilder {
  public:
   static IndexedDBKeyRange Build(const blink::WebIDBKeyRange& key_range);
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(IndexedDBKeyRangeBuilder);
 };
 
 class CONTENT_EXPORT IndexedDBKeyPathBuilder {
  public:
   static IndexedDBKeyPath Build(const blink::WebIDBKeyPath& key_path);
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(IndexedDBKeyPathBuilder);
 };
 
 class CONTENT_EXPORT WebIDBKeyPathBuilder {
  public:
   static blink::WebIDBKeyPath Build(const IndexedDBKeyPath& key_path);
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(WebIDBKeyPathBuilder);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_INDEXED_DB_INDEXED_DB_KEY_BUILDERS_H_