IndexedDB: Sprinkle DISALLOW_COPY_AND_ASSIGN where appropriate

content/child/indexed_db/indexed_db_key_builders.h

Index: content/child/indexed_db/indexed_db_key_builders.h
diff --git a/content/child/indexed_db/indexed_db_key_builders.h b/content/child/indexed_db/indexed_db_key_builders.h
index 5a51a8a4c6678c2f9e23580fa7a085f90738e7aa..fb299c0dd789483357b7dbf5c851bbf5f0213204 100644
--- a/content/child/indexed_db/indexed_db_key_builders.h
+++ b/content/child/indexed_db/indexed_db_key_builders.h
@@ -22,26 +22,41 @@ 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