Issue 28466. Include ErrorProcessor(s) into the AnalysisOptions signature.

pkg/analyzer/lib/src/generated/engine.dart

Index: pkg/analyzer/lib/src/generated/engine.dart
diff --git a/pkg/analyzer/lib/src/generated/engine.dart b/pkg/analyzer/lib/src/generated/engine.dart
index d92e8db496b3feb624c6b0825f0059a193a2b05f..a1cad478df24777d962daf399289365c5308bbae 100644
--- a/pkg/analyzer/lib/src/generated/engine.dart
+++ b/pkg/analyzer/lib/src/generated/engine.dart
@@ -1656,6 +1656,12 @@ class AnalysisOptionsImpl implements AnalysisOptions {
       buffer.addBool(strongMode);
       buffer.addBool(strongModeHints);
 
+      // Append error processors.
+      buffer.addInt(errorProcessors.length);
+      for (ErrorProcessor processor in errorProcessors) {
+        buffer.addString(processor.description);
+      }
+
       // Append lints.
       buffer.addInt(lintRules.length);
       for (Linter lintRule in lintRules) {