Remove computeSignature from FunctionElement.

pkg/compiler/lib/src/elements/elements.dart

 // Copyright (c) 2012, 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 elements;
 
 
 import '../constants/expressions.dart';
 import '../tree/tree.dart';
 import '../util/util.dart';
@@ skipping 1111 matching lines @@
 abstract class FunctionElement extends Element
     implements AstElement,
                TypedElement,
                FunctionTypedElement,
                ExecutableElement {
   FunctionExpression get node;
 
   FunctionElement get patch;
   FunctionElement get origin;
 
-  /// Do not use [computeSignature] outside of the resolver; instead retrieve
-  /// the signature through the [functionSignature] field.
-  /// Trying to access a function signature that has not been computed in
-  /// resolution is an error and calling [computeSignature] covers that error.
-  /// This method will go away!
-  // TODO(johnniwinther): Rename to `ensureFunctionSignature`.
-  @deprecated FunctionSignature computeSignature(Compiler compiler);
-
   bool get hasFunctionSignature;
 
   /// The parameters of this functions.
   List<ParameterElement> get parameters;
 
   /// The type of this function.
   FunctionType get type;
 
   /// The synchronous/asynchronous marker on this function.
   AsyncMarker get asyncMarker;
@@ skipping 494 matching lines @@
   bool get isDeclaredByField;
 
   /// Returns `true` if this member is abstract.
   bool get isAbstract;
 
   /// If abstract, [implementation] points to the overridden concrete member,
   /// if any. Otherwise [implementation] points to the member itself.
   Member get implementation;
 }