Remove dead code for closure-converting tearoffs.

pkg/kernel/lib/transformations/closure/info.dart

Index: pkg/kernel/lib/transformations/closure/info.dart
diff --git a/pkg/kernel/lib/transformations/closure/info.dart b/pkg/kernel/lib/transformations/closure/info.dart
index 8d6645b8edb64e5b91e3a169d3871022972c447d..08d6a5a4fc33a22339aa09d64b72fbe5dc93c8f2 100644
--- a/pkg/kernel/lib/transformations/closure/info.dart
+++ b/pkg/kernel/lib/transformations/closure/info.dart
@@ -12,10 +12,7 @@ import '../../ast.dart'
         FunctionDeclaration,
         FunctionNode,
         Member,
-        Name,
         Procedure,
-        ProcedureKind,
-        PropertyGet,
         ThisExpression,
         TypeParameter,
         TypeParameterType,
@@ -45,13 +42,6 @@ class ClosureInfo extends RecursiveVisitor {
 
   final Map<FunctionNode, String> localNames = <FunctionNode, String>{};
 
-  /// Contains all names used as getter through a [PropertyGet].
-  final Set<Name> invokedGetters = new Set<Name>();
-
-  /// Contains all names of declared regular instance methods (not including
-  /// accessors and operators).
-  final Set<Name> declaredInstanceMethodNames = new Set<Name>();
-
   Class currentClass;
 
   Member currentMember;
@@ -62,24 +52,6 @@ class ClosureInfo extends RecursiveVisitor {
     return currentFunction == null || currentMemberFunction == currentFunction;
   }
 
-  /// Maps the names of all instance methods that may be torn off (aka
-  /// implicitly closurized) to `${name.name}#get`.
-  Map<Name, Name> get tearOffGetterNames {
-    // TODO(dmitryas): Add support for tear-offs. When added, uncomment this.
-    //
-    // Map<Name, Name> result = <Name, Name>{};
-    // for (Name name in declaredInstanceMethodNames) {
-    //   if (invokedGetters.contains(name)) {
-    //     result[name] = new Name("${name.name}#get", name.library);
-    //   }
-    // }
-    // return result;
-    //
-    // Currently an empty map is returned, so no tear-offs supporting functions
-    // and getters are generated, and no property-get targets are renamed.
-    return <Name, Name>{};
-  }
-
   void beginMember(Member member, [FunctionNode function]) {
     currentMemberLocalNames.clear();
     if (function != null) {
@@ -140,16 +112,6 @@ class ClosureInfo extends RecursiveVisitor {
 
   visitProcedure(Procedure node) {
     beginMember(node, node.function);
-    if (node.isInstanceMember && node.kind == ProcedureKind.Method) {
-      // Ignore the `length` method of [File] subclasses for now, as they
-      // will force us to rename the `length` getter (kernel issue #43).
-      // TODO(ahe): remove this condition.
-      Class parent = node.parent;
-      if (node.name.name != "length" ||
-          parent.enclosingLibrary.importUri.toString() != "dart:io") {
-        declaredInstanceMethodNames.add(node.name);
-      }
-    }
     super.visitProcedure(node);
     endMember();
   }
@@ -240,11 +202,6 @@ class ClosureInfo extends RecursiveVisitor {
     }
   }
 
-  visitPropertyGet(PropertyGet node) {
-    invokedGetters.add(node.name);
-    super.visitPropertyGet(node);
-  }
-
   saveCurrentFunction(void f()) {
     var saved = currentFunction;
     try {