Revert "Adjust cipher suites that are cross supported in FireFox ESR and Chrome"

This reverts commit 9c4fcc1.

Author: zoracon

test/rules/src/https_everywhere_checker/http_client.py

@@ -46,10 +46,8 @@ def getCAPath(self, platform):
 class FetchOptions(object):
     """HTTP fetcher options like timeouts."""
 
-    # The default list of cipher suites that are supported in Firefox ESR, Chrome
-    # These naming formats are from OpenSSL
-    # This list is crosschecked with https://wiki.mozilla.org/Security/Cipher_Suites and https://clienttest.ssllabs.com
-    _DEFAULT_CIPHERLIST = "ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384"
+    # The default list of cipher suites that ships with Firefox 51.0.1
+    _DEFAULT_CIPHERLIST = "ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES128-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA:AES128-SHA:AES256-SHA:DES-CBC3-SHA"
 
     def __init__(self, config):
         """Parse options from [http] section