Revert 284192 due to a failing test.

content/child/webcrypto/webcrypto_util.h

Index: content/child/webcrypto/webcrypto_util.h
diff --git a/content/child/webcrypto/webcrypto_util.h b/content/child/webcrypto/webcrypto_util.h
index b5eb231bf4fed34d28387f2c0d09c59691167790..f4a2a6f65287160bb63ab23869a90a5b7b00a537 100644
--- a/content/child/webcrypto/webcrypto_util.h
+++ b/content/child/webcrypto/webcrypto_util.h
@@ -67,30 +67,17 @@ CONTENT_EXPORT blink::WebCryptoAlgorithm CreateRsaHashedImportAlgorithm(
     blink::WebCryptoAlgorithmId id,
     blink::WebCryptoAlgorithmId hash_id);
 
+bool CreateSecretKeyAlgorithm(const blink::WebCryptoAlgorithm& algorithm,
+                              unsigned int keylen_bytes,
+                              blink::WebCryptoKeyAlgorithm* key_algorithm);
+
 // Returns true if the set bits in b make up a subset of the set bits in a.
 bool ContainsKeyUsages(blink::WebCryptoKeyUsageMask a,
                        blink::WebCryptoKeyUsageMask b);
 
-bool KeyUsageAllows(const blink::WebCryptoKey& key,
-                    const blink::WebCryptoKeyUsage usage);
-
 bool IsAlgorithmRsa(blink::WebCryptoAlgorithmId alg_id);
 bool IsAlgorithmAsymmetric(blink::WebCryptoAlgorithmId alg_id);
 
-Status GetAesGcmTagLengthInBits(const blink::WebCryptoAesGcmParams* params,
-                                unsigned int* tag_length_bits);
-
-Status GetAesKeyGenLengthInBits(const blink::WebCryptoAesKeyGenParams* params,
-                                unsigned int* keylen_bits);
-
-Status GetHmacKeyGenLengthInBits(const blink::WebCryptoHmacKeyGenParams* params,
-                                 unsigned int* keylen_bits);
-
-Status VerifyAesKeyLengthForImport(unsigned int keylen_bytes);
-
-Status CheckKeyCreationUsages(blink::WebCryptoKeyUsageMask all_possible_usages,
-                              blink::WebCryptoKeyUsageMask actual_usages);
-
 }  // namespace webcrypto
 
 }  // namespace content