[flutter] Bump chrome to 81.0.4044.138

https://github.com/flutter/flutter/issues/56042

Change-Id: Ic282ec2fc6ca3a44a402b8e21e6cb21e080d043a
Reviewed-on: https://dart-review.googlesource.com/c/recipes/+/148534
Reviewed-by: Martin Kustermann <kustermann@google.com>
Reviewed-by: Karl Klose <karlklose@google.com>
diff --git a/recipes/dart/flutter_engine.expected/flutter-engine-linux.json b/recipes/dart/flutter_engine.expected/flutter-engine-linux.json
index 5754692..a3b23e2 100644
--- a/recipes/dart/flutter_engine.expected/flutter-engine-linux.json
+++ b/recipes/dart/flutter_engine.expected/flutter-engine-linux.json
@@ -1921,7 +1921,7 @@
       "-root",
       "[CACHE]/builder/src/flutter/browsers",
       "-ensure-file",
-      "dart/browsers/chrome/${platform} version:76",
+      "dart/browsers/chrome/${platform} version:81",
       "-max-threads",
       "0",
       "-json-output",
@@ -1939,7 +1939,7 @@
       "@@@STEP_LOG_LINE@json.output@  \"result\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"\": [@@@",
       "@@@STEP_LOG_LINE@json.output@      {@@@",
-      "@@@STEP_LOG_LINE@json.output@        \"instance_id\": \"resolved-instance_id-of-version:76------\", @@@",
+      "@@@STEP_LOG_LINE@json.output@        \"instance_id\": \"resolved-instance_id-of-version:81------\", @@@",
       "@@@STEP_LOG_LINE@json.output@        \"package\": \"dart/browsers/chrome/resolved-platform\"@@@",
       "@@@STEP_LOG_LINE@json.output@      }@@@",
       "@@@STEP_LOG_LINE@json.output@    ]@@@",
diff --git a/recipes/dart/flutter_engine.py b/recipes/dart/flutter_engine.py
index 64f2b52..82d38fb 100644
--- a/recipes/dart/flutter_engine.py
+++ b/recipes/dart/flutter_engine.py
@@ -368,7 +368,7 @@
     # The web test shards need google-chrome installed.
     # The chrome version is the version of a package at:
     # http://go/cipd/p/dart/browsers/chrome/linux-amd64/
-    chrome_version = '76'
+    chrome_version = '81'
     browser_dir = api.dart.download_browser('chrome', chrome_version)
     chrome_executable = browser_dir.join('chrome', 'google-chrome')
     flutter_env = {