webcrypto: Add ECDSA algorithm (chromium-side)

content/child/webcrypto/status.h

Index: content/child/webcrypto/status.h
diff --git a/content/child/webcrypto/status.h b/content/child/webcrypto/status.h
index 17735c38c9d3c0d509707637c97a290f06374497..e2220afa13b4f0da30e047be1ecb9c5dd27baffe 100644
--- a/content/child/webcrypto/status.h
+++ b/content/child/webcrypto/status.h
@@ -214,6 +214,23 @@ class CONTENT_EXPORT Status {
   // and algorithm.
   static Status ErrorCreateKeyBadUsages();
 
+  // An EC key imported using SPKI/PKCS8 format had the wrong curve specified in
+  // the key.
+  static Status ErrorImportedEcKeyIncorrectCurve();
+
+  // The "crv" member for a JWK did not match the expectations from importKey()
+  static Status ErrorJwkIncorrectCrv();
+
+  // The EC key failed validation (coordinates don't lie on curve, out of range,
+  // etc.)
+  static Status ErrorEcKeyInvalid();
+
+  // The octet string |member_name| was expected to be |expected_length| bytes
+  // long, but was instead |actual_length| bytes long.
+  static Status JwkOctetStringWrongLength(const std::string& member_name,
+                                          size_t expected_length,
+                                          size_t actual_length);
+
  private:
   enum Type { TYPE_ERROR, TYPE_SUCCESS };