webcrypto: Add ECDSA algorithm (chromium-side)

content/child/webcrypto/structured_clone.cc

Index: content/child/webcrypto/structured_clone.cc
diff --git a/content/child/webcrypto/structured_clone.cc b/content/child/webcrypto/structured_clone.cc
index 68d449a065ecf7186b4ba17e587a9293aeb7ee57..f4c0b205a6f6801729d7326a39c0e145547662c4 100644
--- a/content/child/webcrypto/structured_clone.cc
+++ b/content/child/webcrypto/structured_clone.cc
@@ -44,11 +44,15 @@ blink::WebCryptoAlgorithm KeyAlgorithmToImportAlgorithm(
     case blink::WebCryptoKeyAlgorithmParamsTypeRsaHashed:
       return CreateRsaHashedImportAlgorithm(
           algorithm.id(), algorithm.rsaHashedParams()->hash().id());
+    case blink::WebCryptoKeyAlgorithmParamsTypeEc:
+      return CreateEcImportAlgorithm(algorithm.id(),
+                                     algorithm.ecParams()->namedCurve());
     case blink::WebCryptoKeyAlgorithmParamsTypeNone:
       break;
     default:
       break;
   }
+  NOTREACHED();
   return blink::WebCryptoAlgorithm::createNull();
 }
 
@@ -87,10 +91,14 @@ bool ValidateDeserializedKey(const blink::WebCryptoKey& key,
           0)
         return false;
       break;
+    case blink::WebCryptoKeyAlgorithmParamsTypeEc:
+      return algorithm.ecParams()->namedCurve() ==
+             key.algorithm().ecParams()->namedCurve();
     case blink::WebCryptoKeyAlgorithmParamsTypeNone:
     case blink::WebCryptoKeyAlgorithmParamsTypeHmac:
       break;
     default:
+      NOTREACHED();
       return false;
   }