[webcrypto] Implement RSA-PSS using BoringSSL.

content/child/webcrypto/openssl/rsa_ssa_openssl.cc

Index: content/child/webcrypto/openssl/rsa_ssa_openssl.cc
diff --git a/content/child/webcrypto/openssl/rsa_ssa_openssl.cc b/content/child/webcrypto/openssl/rsa_ssa_openssl.cc
index be974cc405e4d5871b4dbf1ea5ffe1e75fb3b908..cf1ab6ec0d976ae54ff89771c9ae5bfb656e342f 100644
--- a/content/child/webcrypto/openssl/rsa_ssa_openssl.cc
+++ b/content/child/webcrypto/openssl/rsa_ssa_openssl.cc
@@ -38,7 +38,7 @@ class RsaSsaImplementation : public RsaHashedAlgorithm {
                       const blink::WebCryptoKey& key,
                       const CryptoData& data,
                       std::vector<uint8_t>* buffer) const override {
-    return RsaSign(key, data, buffer);
+    return RsaSign(key, 0, data, buffer);
   }
 
   virtual Status Verify(const blink::WebCryptoAlgorithm& algorithm,
@@ -46,7 +46,7 @@ class RsaSsaImplementation : public RsaHashedAlgorithm {
                         const CryptoData& signature,
                         const CryptoData& data,
                         bool* signature_match) const override {
-    return RsaVerify(key, signature, data, signature_match);
+    return RsaVerify(key, 0, signature, data, signature_match);
   }
 };