Fixes for -Wunused-function on Linux, Android and ChromeOS

content/renderer/webcrypto/webcrypto_impl_unittest.cc

Index: content/renderer/webcrypto/webcrypto_impl_unittest.cc
diff --git a/content/renderer/webcrypto/webcrypto_impl_unittest.cc b/content/renderer/webcrypto/webcrypto_impl_unittest.cc
index e0d215ec87e7336e1f514cacbb525cab7e68dc34..ffe2377a2b6b8ab2b87327c45dbcc31678969466 100644
--- a/content/renderer/webcrypto/webcrypto_impl_unittest.cc
+++ b/content/renderer/webcrypto/webcrypto_impl_unittest.cc
@@ -80,6 +80,7 @@ blink::WebCryptoAlgorithm CreateAesCbcAlgorithm(
       new blink::WebCryptoAesKeyGenParams(key_length_bits));
 }
 
+#if !defined(USE_OPENSSL)
 blink::WebCryptoAlgorithm CreateRsaAlgorithm(
     blink::WebCryptoAlgorithmId algorithm_id,
     unsigned modulus_length,
@@ -92,6 +93,7 @@ blink::WebCryptoAlgorithm CreateRsaAlgorithm(
       new blink::WebCryptoRsaKeyGenParams(
           modulus_length, Start(public_exponent), public_exponent.size()));
 }
+#endif  // !defined(USE_OPENSSL)
 
 }  // namespace