Add support for RSA-OAEP when using NSS 3.16.2 or later

content/child/webcrypto/platform_crypto.h

Index: content/child/webcrypto/platform_crypto.h
diff --git a/content/child/webcrypto/platform_crypto.h b/content/child/webcrypto/platform_crypto.h
index b9f429c1cefeeb05e53bb674d67f8bdb346a86c6..abe9b2385529ad7129a884b48bad35aff4a55905 100644
--- a/content/child/webcrypto/platform_crypto.h
+++ b/content/child/webcrypto/platform_crypto.h
@@ -110,6 +110,26 @@ Status DecryptRsaEsPkcs1v1_5(PrivateKey* key,
                              std::vector<uint8>* buffer);
 
 // Preconditions:
+//  * |key| is non-null
+//  * |hash| is a digest algorithm
+//  * |label| MAY be empty (e.g. 0 bytes long).
+Status EncryptRsaOaep(PublicKey* key,
+                      const blink::WebCryptoAlgorithm& hash,
+                      const CryptoData& label,
+                      const CryptoData& data,
+                      std::vector<uint8>* buffer);
+
+// Preconditions:
+//   * |key| is non-null
+//   * |hash| is a digest algorithm
+//   * |label| MAY be empty (e.g. 0 bytes long).
+Status DecryptRsaOaep(PrivateKey* key,
+                      const blink::WebCryptoAlgorithm& hash,
+                      const CryptoData& label,
+                      const CryptoData& data,
+                      std::vector<uint8>* buffer);
+
+// Preconditions:
 //  * |key| is a non-null HMAC key.
 //  * |hash| is a digest algorithm.
 Status SignHmac(SymKey* key,