[kernel] Change how TypeParameterType is calculated.

runtime/vm/kernel_to_il.cc

 // 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.
 
 #include <set>
 
 #include "vm/kernel_to_il.h"
 
 #include "vm/compiler.h"
 #include "vm/intermediate_language.h"
@@ skipping 794 matching lines @@
 #ifdef DEBUG
     Function& function =
         Function::Handle(Z, parsed_function_->function().raw());
     while (function.IsClosureFunction()) {
       function = function.parent_function();
     }
     ASSERT(function.IsFactory());
 #endif
     instructions += LoadLocal(scopes_->type_arguments_variable);
   } else if (scopes_->this_variable != NULL &&
-             active_class_.class_type_parameters > 0) {
+             active_class_.ClassTypeParameterCount(Z) > 0) {
     ASSERT(!parsed_function_->function().IsFactory());
     intptr_t type_arguments_field_offset =
         active_class_.klass->type_arguments_field_offset();
     ASSERT(type_arguments_field_offset != dart::Class::kNoTypeArguments);
 
     instructions += LoadLocal(scopes_->this_variable);
     instructions += LoadField(type_arguments_field_offset);
   } else {
     instructions += NullConstant();
   }
@@ skipping 1659 matching lines @@
   StreamingFlowGraphBuilder streaming_flow_graph_builder(
       &helper, zone_, script.kernel_data(), script.kernel_data_size());
   return streaming_flow_graph_builder.GetLineStartsFor(
       script.kernel_script_index());
 }
 
 }  // namespace kernel
 }  // namespace dart
 
 #endif  // !defined(DART_PRECOMPILED_RUNTIME)