Issue 27536. Quick Fix for 'Avoid using braces in interpolation when not needed'.

pkg/analysis_server/lib/src/services/correction/fix.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library analysis_server.src.services.correction.fix;
 
 import 'dart:async';
 
 import 'package:analysis_server/plugin/edit/fix/fix_core.dart';
 import 'package:analysis_server/src/plugin/server_plugin.dart';
@@ skipping 87 matching lines @@
     errorCode == ParserErrorCode.GETTER_WITH_PARAMETERS ||
     errorCode == ParserErrorCode.VAR_AS_TYPE_NAME ||
     errorCode == StaticTypeWarningCode.ILLEGAL_ASYNC_RETURN_TYPE ||
     errorCode == StaticTypeWarningCode.INSTANCE_ACCESS_TO_STATIC_MEMBER ||
     errorCode == StaticTypeWarningCode.INVOCATION_OF_NON_FUNCTION ||
     errorCode == StaticTypeWarningCode.NON_TYPE_AS_TYPE_ARGUMENT ||
     errorCode == StaticTypeWarningCode.UNDEFINED_FUNCTION ||
     errorCode == StaticTypeWarningCode.UNDEFINED_GETTER ||
     errorCode == StaticTypeWarningCode.UNDEFINED_METHOD ||
     errorCode == StaticTypeWarningCode.UNDEFINED_SETTER ||
-    (errorCode is LintCode && errorCode.name == LintNames.annotate_overrides);
+    (errorCode is LintCode &&
+        (errorCode.name == LintNames.annotate_overrides ||
+            errorCode.name == LintNames.unnecessary_brace_in_string_interp));
 
 /**
  * An enumeration of possible quick fix kinds.
  */
 class DartFixKind {
   static const ADD_ASYNC =
       const FixKind('ADD_ASYNC', 50, "Add 'async' modifier");
   static const ADD_FIELD_FORMAL_PARAMETERS = const FixKind(
       'ADD_FIELD_FORMAL_PARAMETERS', 30, "Add final field formal parameters");
   static const ADD_MISSING_PARAMETER_POSITIONAL = const FixKind(
@@ skipping 53 matching lines @@
   static const IMPORT_LIBRARY_PROJECT3 =
       const FixKind('IMPORT_LIBRARY_PROJECT3', 49, "Import library '{0}'");
   static const IMPORT_LIBRARY_SDK =
       const FixKind('IMPORT_LIBRARY_SDK', 49, "Import library '{0}'");
   static const IMPORT_LIBRARY_SHOW =
       const FixKind('IMPORT_LIBRARY_SHOW', 49, "Update library '{0}' import");
   static const INSERT_SEMICOLON =
       const FixKind('INSERT_SEMICOLON', 50, "Insert ';'");
   static const LINT_ADD_OVERRIDE =
       const FixKind('LINT_ADD_OVERRIDE', 50, "Add '@override' annotation");
+  static const LINT_REMOVE_INTERPOLATION_BRACES = const FixKind(
+      'LINT_REMOVE_INTERPOLATION_BRACES',
+      50,
+      'Remove unnecessary interpolation braces');
   static const MAKE_CLASS_ABSTRACT =
       const FixKind('MAKE_CLASS_ABSTRACT', 50, "Make class '{0}' abstract");
   static const REMOVE_DEAD_CODE =
       const FixKind('REMOVE_DEAD_CODE', 50, "Remove dead code");
   static const MAKE_FIELD_NOT_FINAL =
       const FixKind('MAKE_FIELD_NOT_FINAL', 50, "Make field '{0}' not final");
   static const REMOVE_PARAMETERS_IN_GETTER_DECLARATION = const FixKind(
       'REMOVE_PARAMETERS_IN_GETTER_DECLARATION',
       50,
       "Remove parameters in getter declaration");
@@ skipping 47 matching lines @@
   @override
   final AnalysisError error;
 
   FixContextImpl(this.resourceProvider, this.analysisContext, this.error);
 
   FixContextImpl.from(FixContext other)
       : resourceProvider = other.resourceProvider,
         analysisContext = other.analysisContext,
         error = other.error;
 }