Support the name analysis_options.yaml for analysis options files

pkg/analyzer/lib/src/task/options.dart

Index: pkg/analyzer/lib/src/task/options.dart
diff --git a/pkg/analyzer/lib/src/task/options.dart b/pkg/analyzer/lib/src/task/options.dart
index 47acf37f43b8e3feeb522f01ee908db72824abb7..fd1c224ef8d92a256d2d8b2c7a63c79f5ec203b8 100644
--- a/pkg/analyzer/lib/src/task/options.dart
+++ b/pkg/analyzer/lib/src/task/options.dart
@@ -21,7 +21,7 @@ import 'package:analyzer/task/model.dart';
 import 'package:source_span/source_span.dart';
 import 'package:yaml/yaml.dart';
 
-/// The errors produced while parsing `.analysis_options` files.
+/// The errors produced while parsing an analysis options file.
 ///
 /// The list will be empty if there were no errors, but will not be `null`.
 final ListResultDescriptor<AnalysisError> ANALYSIS_OPTIONS_ERRORS =
@@ -204,7 +204,7 @@ class ErrorFilterOptionValidator extends OptionsValidator {
   }
 }
 
-/// A task that generates errors for an `.analysis_options` file.
+/// A task that generates errors for an analysis options file.
 class GenerateOptionsErrorsTask extends SourceBasedAnalysisTask {
   /// The name of the input whose value is the content of the file.
   static const String CONTENT_INPUT_NAME = 'CONTENT_INPUT_NAME';
@@ -276,7 +276,8 @@ class GenerateOptionsErrorsTask extends SourceBasedAnalysisTask {
    */
   static TaskSuitability suitabilityFor(AnalysisTarget target) {
     if (target is Source &&
-        target.shortName == AnalysisEngine.ANALYSIS_OPTIONS_FILE) {
+        (target.shortName == AnalysisEngine.ANALYSIS_OPTIONS_FILE ||
+            target.shortName == AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE)) {
       return TaskSuitability.HIGHEST;
     }
     return TaskSuitability.NONE;
@@ -324,7 +325,7 @@ class LinterOptionsValidator extends TopLevelOptionValidator {
   LinterOptionsValidator() : super('linter', const ['rules']);
 }
 
-/// Validates options defined in an `.analysis_options` file.
+/// Validates options defined in an analysis options file.
 class OptionsFileValidator {
   // TODO(pq): move to an extension point.
   final List<OptionsValidator> _validators = [