Fieldtrial testing config for InfoBarIconMonochrome

Bug: 338217810
Change-Id: I804c17972e085454c5d18eb006be5e83f2fe91bc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5710071
Reviewed-by: Alison Gale <agale@chromium.org>
Commit-Queue: Alison Gale <agale@chromium.org>
Commit-Queue: Charles Meng <charlesmeng@chromium.org>
Auto-Submit: Charles Meng <charlesmeng@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1327825}
diff --git a/testing/variations/fieldtrial_testing_config.json b/testing/variations/fieldtrial_testing_config.json
index 12a1f7f..896be21c 100644
--- a/testing/variations/fieldtrial_testing_config.json
+++ b/testing/variations/fieldtrial_testing_config.json
@@ -12090,6 +12090,25 @@
             ]
         }
     ],
+    "InfoBarIconMonochrome": [
+        {
+            "platforms": [
+                "chromeos",
+                "chromeos_lacros",
+                "linux",
+                "mac",
+                "windows"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled",
+                    "enable_features": [
+                        "InfoBarIconMonochrome"
+                    ]
+                }
+            ]
+        }
+    ],
     "InputDeviceSettingsSplit": [
         {
             "platforms": [