Stop using Element.unit directly.

pkg/analysis_server/lib/src/services/refactoring/inline_method.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 services.src.refactoring.inline_method;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/protocol_server.dart' hide Element;
 import 'package:analysis_server/src/services/correction/source_range.dart';
@@ skipping 173 matching lines @@
           result.add(classMemberElement.displayName);
         }
       }
     }
   }
   // done
   return result;
 }
 
 /**
- * Completes with the resolved [CompilationUnit] that contains the [element].
- */
-typedef Future<CompilationUnit> GetResolvedUnitContainingElement(
-    Element element);
-
-/**
  * [InlineMethodRefactoring] implementation.
  */
 class InlineMethodRefactoringImpl extends RefactoringImpl
     implements InlineMethodRefactoring {
   final SearchEngine searchEngine;
-  final GetResolvedUnitContainingElement getResolvedUnit;
+  final GetResolvedUnit getResolvedUnit;
   final CompilationUnit unit;
   final int offset;
   CorrectionUtils utils;
   SourceChange change;
 
   bool isDeclaration = false;
   bool deleteSource = false;
   bool inlineAll = true;
 
   ExecutableElement _methodElement;
@@ skipping 654 matching lines @@
   }
 
   void _addVariable(SimpleIdentifier node) {
     VariableElement variableElement = getLocalVariableElement(node);
     if (variableElement != null) {
       SourceRange nodeRange = rangeNode(node);
       result.addVariable(variableElement, nodeRange);
     }
   }
 }