Only create instances of WebTransformOperations using cc::TransformOperations::Create

cc/transform_operations.h

Index: cc/transform_operations.h
diff --git a/cc/transform_operations.h b/cc/transform_operations.h
new file mode 100644
index 0000000000000000000000000000000000000000..95124fe44312c4fb0af59cf56d891dd30a70cf64
--- /dev/null
+++ b/cc/transform_operations.h
@@ -0,0 +1,25 @@
+// Copyright 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.
+
+#ifndef CC_TRANSFORM_OPERATIONS_H_
+#define CC_TRANSFORM_OPERATIONS_H_
+
+#include "cc/cc_export.h"
+
+namespace WebKit {
+class WebTransformOperations;
+}
+
+namespace cc {
+
+class CC_EXPORT TransformOperations {
+ public:
+  static WebKit::WebTransformOperations* Create();
+  static WebKit::WebTransformOperations* Create(
+      const WebKit::WebTransformOperations& prototype);
+};
+
+}  // namespace cc
+
+#endif  // CC_TRANSFORM_OPERATIONS_H_