[kernel] Change how TypeParameterType is calculated.

pkg/kernel/lib/binary/ast_from_binary.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 file.
 library kernel.ast_from_binary;
 
 import 'dart:convert';
 import 'dart:typed_data';
 
 import '../ast.dart';
 import '../transformations/flags.dart';
@@ skipping 1184 matching lines @@
             positionalParameterNames: positionalNames,
             typedefReference: typedefReference);
       case Tag.SimpleFunctionType:
         var positional = readDartTypeList();
         var positionalNames = readStringReferenceList();
         var returnType = readDartType();
         return new FunctionType(positional, returnType,
             positionalParameterNames: positionalNames);
       case Tag.TypeParameterType:
         int index = readUInt();
-        readUInt(); // offset of parameter list in the binary.
-        readUInt(); // index in the list.
         var bound = readDartTypeOption();
         return new TypeParameterType(typeParameterStack[index], bound);
       default:
         throw fail('Invalid dart type tag: $tag');
     }
   }
 
   List<TypeParameter> readAndPushTypeParameterList(
       [List<TypeParameter> list, TreeNode parent]) {
     int length = readUInt();
@@ skipping 64 matching lines @@
       ..fileOffset = offset
       ..fileEqualsOffset = fileEqualsOffset;
   }
 
   int readOffset() {
     // Offset is saved as unsigned,
     // but actually ranges from -1 and up (thus the -1)
     return readUInt() - 1;
   }
 }