test: Re-enable ChromeOS testing

.github/workflows/shaka-bot-commands/command-test.sh

@@ -25,7 +25,7 @@ WORKFLOW_ARGS=( "pr=$PR_NUMBER" )
 
 case "${SHAKA_BOT_ARGUMENTS[0]}" in
   # CE devices only.
-  ce) WORKFLOW_ARGS+=( "browser_filter=Tizen ChromecastHub ChromecastUltra ChromecastGTV ChromeAndroid" ) ;;
+  ce) WORKFLOW_ARGS+=( "browser_filter=Tizen ChromecastHub ChromecastUltra ChromecastGTV ChromeAndroid ChromeOS" ) ;;
 
   # No command argument, no extra workflow arguments.
   "") ;;

build/shaka-lab.yaml

@@ -261,8 +261,6 @@ ChromecastV1:
   version: v1
 
 ChromeOS:
-  # TODO(b/145916766): Persistent license tests failing
-  disabled: true
   browser: chromeos
   # https://www.acer.com/us-en/desktops-and-all-in-ones/acer-chromebox/acer-chromebox-cxi3/indexnew
   version: Acer-CXI3

lib/util/platform.js

@@ -506,6 +506,15 @@ shaka.util.Platform = class {
     return shaka.util.Platform.userAgentContains_('Fuchsia');
   }
 
+  /**
+   * Return true if the platform is a ChromeOS, regardless of the browser.
+   *
+   * @return {boolean}
+   */
+  static isChromeOS() {
+    return shaka.util.Platform.userAgentContains_('CrOS');
+  }
+
   /**
    * Return true if the platform is controlled by a remote control.
    *

test/offline/offline_integration.js

@@ -97,6 +97,10 @@ filterDescribe('Offline', supportsStorage, () => {
           pending('Skipping offline DRM tests on Android - crbug.com/1108158');
           return;
         }
+        if (shaka.util.Platform.isChromeOS()) {
+          pending('Skipping offline DRM tests on ChromeOS');
+          return;
+        }
 
         shaka.test.TestScheme.setupPlayer(player, 'sintel-enc');