IndexedDB: Sprinkle DISALLOW_COPY_AND_ASSIGN where appropriate

content/browser/indexed_db/indexed_db_backing_store.h

Index: content/browser/indexed_db/indexed_db_backing_store.h
diff --git a/content/browser/indexed_db/indexed_db_backing_store.h b/content/browser/indexed_db/indexed_db_backing_store.h
index febcd70acdc2acc468b3bb06c0c262ebc264cf54..6720ee9b5d0c40acbcad97aad85775a8b16f5777 100644
--- a/content/browser/indexed_db/indexed_db_backing_store.h
+++ b/content/browser/indexed_db/indexed_db_backing_store.h
@@ -175,6 +175,7 @@ class CONTENT_EXPORT IndexedDBBackingStore
   class BlobWriteCallback : public base::RefCounted<BlobWriteCallback> {
    public:
     virtual void Run(bool succeeded) = 0;
+
    protected:
     virtual ~BlobWriteCallback() {}
     friend class base::RefCounted<BlobWriteCallback>;
@@ -333,6 +334,9 @@ class CONTENT_EXPORT IndexedDBBackingStore
     scoped_ptr<LevelDBIterator> iterator_;
     scoped_ptr<IndexedDBKey> current_key_;
     IndexedDBBackingStore::RecordIdentifier record_identifier_;
+
+   private:
+    DISALLOW_COPY_AND_ASSIGN(Cursor);
   };
 
   virtual scoped_ptr<Cursor> OpenObjectStoreKeyCursor(
@@ -459,6 +463,7 @@ class CONTENT_EXPORT IndexedDBBackingStore
       virtual ~ChainedBlobWriter() {}
       friend class base::RefCounted<ChainedBlobWriter>;
     };
+
     class ChainedBlobWriterImpl;
 
     typedef std::vector<WriteDescriptor> WriteDescriptorVec;
@@ -562,6 +567,8 @@ class CONTENT_EXPORT IndexedDBBackingStore
   // will hold a reference to this backing store.
   IndexedDBActiveBlobRegistry active_blob_registry_;
   base::OneShotTimer<IndexedDBBackingStore> close_timer_;
+
+  DISALLOW_COPY_AND_ASSIGN(IndexedDBBackingStore);
 };
 
 }  // namespace content