Add tests for RSA private key import using JWK when p and q are swapped.

content/child/webcrypto/test/test_helpers.h

Index: content/child/webcrypto/test/test_helpers.h
diff --git a/content/child/webcrypto/test/test_helpers.h b/content/child/webcrypto/test/test_helpers.h
index 1505f09e75765de51eec0aac1b2573cac65d5107..9d4e193746c31a733bd620620a567fac93073e01 100644
--- a/content/child/webcrypto/test/test_helpers.h
+++ b/content/child/webcrypto/test/test_helpers.h
@@ -48,6 +48,9 @@ void PrintTo(const CryptoData& data, ::std::ostream* os);
 bool operator==(const CryptoData& a, const CryptoData& b);
 bool operator!=(const CryptoData& a, const CryptoData& b);
 
+// Gives a human-readable description of |status| and any error it represents.
+std::string StatusToString(const Status& status);
+
 // TODO(eroman): For Linux builds using system NSS, AES-GCM and RSA-OAEP, and
 // RSA key import are a runtime dependency.
 bool SupportsAesGcm();