[webcrypto] Add JWK import of RSA public key for NSS.

content/renderer/webcrypto/webcrypto_impl_openssl.cc

Index: content/renderer/webcrypto/webcrypto_impl_openssl.cc
diff --git a/content/renderer/webcrypto/webcrypto_impl_openssl.cc b/content/renderer/webcrypto/webcrypto_impl_openssl.cc
index 85e52fa0c6025369f110af90adf78674c6292ac9..3170b28b987aac50f1045c9088816e453c59cb05 100644
--- a/content/renderer/webcrypto/webcrypto_impl_openssl.cc
+++ b/content/renderer/webcrypto/webcrypto_impl_openssl.cc
@@ -496,4 +496,18 @@ bool WebCryptoImpl::VerifySignatureInternal(
   return true;
 }
 
+bool WebCryptoImpl::ImportRsaPublicKeyInternal(
+    const unsigned char* modulus_data,
+    unsigned modulus_size,
+    const unsigned char* exponent_data,
+    unsigned exponent_size,
+    const blink::WebCryptoAlgorithm& algorithm,
+    bool extractable,
+    blink::WebCryptoKeyUsageMask usage_mask,
+    blink::WebCryptoKey* key) {
+  // TODO(padolph): Placeholder for OpenSSL implementation.
+  // Issue http://crbug.com/267888.
+  return false;
+}
+
 }  // namespace content