Revert 284192 due to a failing test.

content/child/webcrypto/openssl/aes_kw_openssl.cc

-// Copyright 2014 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 "base/logging.h"
-#include "content/child/webcrypto/openssl/aes_key_openssl.h"
-#include "content/child/webcrypto/status.h"
-
-namespace content {
-
-namespace webcrypto {
-
-namespace {
-
-class AesKwImplementation : public AesAlgorithm {
- public:
-  AesKwImplementation() : AesAlgorithm("KW") {}
-
-  virtual Status Encrypt(const blink::WebCryptoAlgorithm& algorithm,
-                         const blink::WebCryptoKey& key,
-                         const CryptoData& data,
-                         std::vector<uint8>* buffer) const OVERRIDE {
-    // TODO(eroman):
-    return Status::ErrorUnsupported();
-  }
-
-  virtual Status Decrypt(const blink::WebCryptoAlgorithm& algorithm,
-                         const blink::WebCryptoKey& key,
-                         const CryptoData& data,
-                         std::vector<uint8>* buffer) const OVERRIDE {
-    // TODO(eroman):
-    return Status::ErrorUnsupported();
-  }
-};
-
-}  // namespace
-
-AlgorithmImplementation* CreatePlatformAesKwImplementation() {
-  return new AesKwImplementation;
-}
-
-}  // namespace webcrypto
-
-}  // namespace content