Extract Local refactoring: skip method names in invocations.

pkg/analysis_server/lib/src/services/refactoring/extract_local.dart

Index: pkg/analysis_server/lib/src/services/refactoring/extract_local.dart
diff --git a/pkg/analysis_server/lib/src/services/refactoring/extract_local.dart b/pkg/analysis_server/lib/src/services/refactoring/extract_local.dart
index c865aec72eec276336d43c3be9b09ae729e72a28..b9510002c57f07a89c32b408974b643a6fd0ed09 100644
--- a/pkg/analysis_server/lib/src/services/refactoring/extract_local.dart
+++ b/pkg/analysis_server/lib/src/services/refactoring/extract_local.dart
@@ -207,17 +207,15 @@ class ExtractLocalRefactoringImpl extends RefactoringImpl
       // fatal selection problems
       if (coveringExpressionOffsets.isEmpty) {
         if (node is SimpleIdentifier) {
-          Element element = node.bestElement;
-          if (element is FunctionElement || element is MethodElement) {
-            return new RefactoringStatus.fatal(
-                'Cannot extract a single method name.',
-                newLocation_fromNode(node));
-          }
           if (node.inDeclarationContext()) {
             return new RefactoringStatus.fatal(
                 'Cannot extract the name part of a declaration.',
                 newLocation_fromNode(node));
           }
+          Element element = node.bestElement;
+          if (element is FunctionElement || element is MethodElement) {
+            continue;
+          }
         }
         if (parent is AssignmentExpression && parent.leftHandSide == node) {
           return new RefactoringStatus.fatal(