WebCrypto: Implement digest() using NSS

content/renderer/webcrypto_impl.cc

 // 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.
 
 #include "content/renderer/webcrypto_impl.h"
 
+// TODO(bryaneyler): Also include these in OpenSSL build.
+#if defined(USE_NSS)
+#include "content/renderer/webcrypto_sha_digest.h"
+#endif
+
 #include "third_party/WebKit/public/platform/WebCryptoAlgorithm.h"
 
 namespace content {
 
 WebKit::WebCryptoOperation* WebCryptoImpl::digest(
+// TODO(bryaneyler): Also include these in OpenSSL build.
+#if defined(USE_NSS)
     const WebKit::WebCryptoAlgorithm& algorithm) {
   switch (algorithm.id()) {
     case WebKit::WebCryptoAlgorithmIdSha1:
     case WebKit::WebCryptoAlgorithmIdSha224:
     case WebKit::WebCryptoAlgorithmIdSha256:
     case WebKit::WebCryptoAlgorithmIdSha384:
     case WebKit::WebCryptoAlgorithmIdSha512:
-      // TODO(eroman): Implement.
-      return NULL;
+      return new WebCryptoSHADigest(algorithm.id());
     default:
       // Not a digest algorithm.
       return NULL;
   }
+#else
+  // No way to process.
+  return NULL;
+#endif
 }
 
 }  // namespace content