[webcrypto] Remove support for AES 192-bit keys (2 of 2)

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 c386c0e076b2bf74fed028e84bc930a248e0d384..70d97e7c9bae61e279e27326d32b84127461dd5b 100644
--- a/content/child/webcrypto/status.h
+++ b/content/child/webcrypto/status.h
@@ -124,6 +124,9 @@ class CONTENT_EXPORT Status {
   // AES.
   static Status ErrorImportAesKeyLength();
 
+  // 192-bit AES keys are valid, however unsupported.
+  static Status ErrorAes192BitUnsupported();
+
   // The wrong key was used for the operation. For instance, a public key was
   // used to verify a RsaSsaPkcs1v1_5 signature, or tried exporting a private
   // key using spki format.