Support generic methods in kernel

pkg/compiler/lib/src/kernel/kernel_visitor.dart

 // Copyright (c) 2016, 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.md file.
 
 import 'package:kernel/ast.dart' as ir;
 import 'package:kernel/frontend/accessors.dart'
     show
         Accessor,
         IndexAccessor,
         NullAwarePropertyAccessor,
@@ skipping 2007 matching lines @@
           new ir.VariableDeclaration(local.name,
               initializer: null,
               type: typeToIrHack(local.type),
               isFinal: isFinal,
               isConst: local.isConst),
           local);
     });
   }
 
   ir.FunctionNode buildFunctionNode(FunctionElement function, Node bodyNode) {
-    List<ir.TypeParameter> typeParameters =
-        kernel.typeParametersNotImplemented();
+    List<ir.TypeParameter> typeParameters = <ir.TypeParameter>[];
     List<ir.VariableDeclaration> positionalParameters =
         <ir.VariableDeclaration>[];
     List<ir.VariableDeclaration> namedParameters = <ir.VariableDeclaration>[];
     int requiredParameterCount = 0;
     ir.DartType returnType = const ir.DynamicType();
     if (function.hasFunctionSignature) {
       FunctionSignature signature = function.functionSignature;
       requiredParameterCount = signature.requiredParameterCount;
       signature.forEachParameter((ParameterElement parameter) {
         ir.VariableDeclaration variable = getLocal(parameter);
@@ skipping 807 matching lines @@
       : this(null, true, node, initializers);
 
   accept(ir.Visitor v) => throw "unsupported";
 
   visitChildren(ir.Visitor v) => throw "unsupported";
 
   String toString() {
     return "IrFunction($kind, $isConstructor, $node, $initializers)";
   }
 }