Skip disabling battery optimizations on ChromeOS

app/src/main/java/eu/faircode/email/FragmentSetup.java

@@ -677,10 +677,11 @@ public class FragmentSetup extends FragmentBase {
                 btnDoze.setEnabled((ignoring != null && !ignoring) || BuildConfig.DEBUG);
         }
 
-        tvDozeDone.setText(ignoring == null || ignoring ? R.string.title_setup_done : R.string.title_setup_to_do);
-        tvDozeDone.setTextColor(ignoring == null || ignoring ? textColorPrimary : colorWarning);
-        tvDozeDone.setTypeface(null, ignoring == null || ignoring ? Typeface.NORMAL : Typeface.BOLD);
-        tvDozeDone.setCompoundDrawablesWithIntrinsicBounds(ignoring == null || ignoring ? check : null, null, null, null);
+        boolean done = (ignoring == null || ignoring || Helper.isArc());
+        tvDozeDone.setText(done ? R.string.title_setup_done : R.string.title_setup_to_do);
+        tvDozeDone.setTextColor(done ? textColorPrimary : colorWarning);
+        tvDozeDone.setTypeface(null, done ? Typeface.NORMAL : Typeface.BOLD);
+        tvDozeDone.setCompoundDrawablesWithIntrinsicBounds(done ? check : null, null, null, null);
         tvDoze12.setVisibility(Helper.isOptimizing12(getContext()) ? View.VISIBLE : View.GONE);
 
         grpInexactAlarms.setVisibility(

app/src/main/java/eu/faircode/email/Helper.java

@@ -1027,6 +1027,15 @@ public class Helper {
         return "sony".equalsIgnoreCase(Build.MANUFACTURER);
     }
 
+    static boolean isSurfaceDuo() {
+        return ("Microsoft".equalsIgnoreCase(Build.MANUFACTURER) && "Surface Duo".equals(Build.MODEL));
+    }
+
+    static boolean isArc() {
+        // https://github.com/google/talkback/blob/master/utils/src/main/java/com/google/android/accessibility/utils/FeatureSupport.java
+        return (Build.DEVICE != null) && Build.DEVICE.matches(".+_cheets|cheets_.+");
+    }
+
     static boolean isStaminaEnabled(Context context) {
         // https://dontkillmyapp.com/sony
         if (BuildConfig.DEBUG)
@@ -1044,10 +1053,6 @@ public class Helper {
         }
     }
 
-    static boolean isSurfaceDuo() {
-        return ("Microsoft".equalsIgnoreCase(Build.MANUFACTURER) && "Surface Duo".equals(Build.MODEL));
-    }
-
     static boolean isKilling() {
         // https://dontkillmyapp.com/
         return (isSamsung() ||