[webcrypto] Minor cleanup/consolidation of JWK source.

content/child/webcrypto/shared_crypto.h

Index: content/child/webcrypto/shared_crypto.h
diff --git a/content/child/webcrypto/shared_crypto.h b/content/child/webcrypto/shared_crypto.h
index e341f59e8c262bbd6923b1893a920986ffb1ee69..c54db7432d4597f0aa8c22ca49b185f90db913a0 100644
--- a/content/child/webcrypto/shared_crypto.h
+++ b/content/child/webcrypto/shared_crypto.h
@@ -123,15 +123,6 @@ CONTENT_EXPORT Status
                     const CryptoData& data,
                     bool* signature_match);
 
-CONTENT_EXPORT Status ImportKeyJwk(const CryptoData& key_data,
-                                   const blink::WebCryptoAlgorithm& algorithm,
-                                   bool extractable,
-                                   blink::WebCryptoKeyUsageMask usage_mask,
-                                   blink::WebCryptoKey* key);
-
-CONTENT_EXPORT Status
-    ExportKeyJwk(const blink::WebCryptoKey& key, blink::WebArrayBuffer* buffer);
-
 CONTENT_EXPORT Status
     WrapKey(blink::WebCryptoKeyFormat format,
             const blink::WebCryptoKey& wrapping_key,