Migrate inline_method

Change-Id: Iff0d8dac16c0ea8ede807a393276b980d4d5a7f7
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/397101
Commit-Queue: Brian Wilkerson <[email protected]>
Reviewed-by: Konstantin Shcheglov <[email protected]>

Author: bwilkerson

pkg/analysis_server/analyzer_use_new_elements.txt

@@ -53,7 +53,6 @@ lib/src/services/refactoring/legacy/extract_local.dart
 lib/src/services/refactoring/legacy/extract_method.dart
 lib/src/services/refactoring/legacy/extract_widget.dart
 lib/src/services/refactoring/legacy/inline_local.dart
-lib/src/services/refactoring/legacy/inline_method.dart
 lib/src/services/refactoring/legacy/move_file.dart
 lib/src/services/refactoring/legacy/refactoring.dart
 lib/src/services/refactoring/legacy/refactoring_internal.dart

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

@@ -227,6 +227,17 @@ LocalVariableElement? getLocalVariableElement(SimpleIdentifier node) {
   return null;
 }
 
+/// Return the variable's element if [node] is a reference to a local variable.
+///
+/// Returns `null` if it isn't a reference to a local variable.
+LocalVariableElement2? getLocalVariableElement2(SimpleIdentifier node) {
+  var element = node.element;
+  if (element is LocalVariableElement2) {
+    return element;
+  }
+  return null;
+}
+
 /// Return the nearest common ancestor of the given [nodes].
 AstNode? getNearestCommonAncestor(List<AstNode> nodes) {
   // may be no nodes
@@ -279,6 +290,17 @@ ParameterElement? getParameterElement(SimpleIdentifier node) {
   return null;
 }
 
+/// Returns the parameter's element if the [node] is a reference to a parameter.
+///
+/// Returns `null` if it isn't a reference to a parameter.
+FormalParameterElement? getParameterElement2(SimpleIdentifier node) {
+  var element = node.element;
+  if (element is FormalParameterElement) {
+    return element;
+  }
+  return null;
+}
+
 /// Return parent [AstNode]s from compilation unit (at index "0") to the given
 /// [node].
 List<AstNode> getParents(AstNode node) {