Enable PermuteTLSExtensions by default

Bug: launch/4200474
Change-Id: I568fefb2b5d99c43db4786194c10aea4de295a87
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4174894
Commit-Queue: Matt Mueller <mattm@chromium.org>
Auto-Submit: David Benjamin <davidben@chromium.org>
Reviewed-by: Matt Mueller <mattm@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1093530}
diff --git a/net/base/features.cc b/net/base/features.cc
index 211f2599..0183f1b 100644
--- a/net/base/features.cc
+++ b/net/base/features.cc
@@ -123,7 +123,7 @@
 
 BASE_FEATURE(kPermuteTLSExtensions,
              "PermuteTLSExtensions",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kPostQuantumCECPQ2,
              "PostQuantumCECPQ2",
diff --git a/testing/variations/fieldtrial_testing_config.json b/testing/variations/fieldtrial_testing_config.json
index 1772e48..5efcecf 100644
--- a/testing/variations/fieldtrial_testing_config.json
+++ b/testing/variations/fieldtrial_testing_config.json
@@ -8770,28 +8770,6 @@
             ]
         }
     ],
-    "PermuteTLSExtensions": [
-        {
-            "platforms": [
-                "android",
-                "chromeos",
-                "chromeos_lacros",
-                "fuchsia",
-                "ios",
-                "linux",
-                "mac",
-                "windows"
-            ],
-            "experiments": [
-                {
-                    "name": "Enabled",
-                    "enable_features": [
-                        "PermuteTLSExtensions"
-                    ]
-                }
-            ]
-        }
-    ],
     "PersistentOriginTrials": [
         {
             "platforms": [