[webcrypto] Reject AES-GCM tag lengths other than 32, 64, 96, 104, 112, 120, 128.

content/renderer/webcrypto/webcrypto_util.h

Index: content/renderer/webcrypto/webcrypto_util.h
diff --git a/content/renderer/webcrypto/webcrypto_util.h b/content/renderer/webcrypto/webcrypto_util.h
index b10f94df72fe303349ad1f9cdf19219d36e43d47..a9383e1aad9764462cb73cd3c89015410b069d94 100644
--- a/content/renderer/webcrypto/webcrypto_util.h
+++ b/content/renderer/webcrypto/webcrypto_util.h
@@ -145,8 +145,7 @@ class CONTENT_EXPORT Status {
   static Status ErrorUnexpected();
 
   // The authentication tag length specified for AES-GCM encrypt/decrypt was
-  // either greater than 128 bits, or it was not a multiple of 8 bits.
-  // (zero length is allowed).
+  // not 32, 64, 96, 104, 112, 120, or 128.
   static Status ErrorInvalidAesGcmTagLength();
 
   // The "publicExponent" used to generate a key was invalid: either no bytes