Cleanup change.

runtime/vm/debugger.cc

 // 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.
 
 #include "vm/debugger.h"
 
 #include "include/dart_api.h"
 
 #include "platform/address_sanitizer.h"
 
@@ skipping 788 matching lines @@
 
 
 bool ActivationFrame::HandlesException(const Instance& exc_obj) {
   intptr_t try_index = TryIndex();
   if (try_index < 0) {
     return false;
   }
   ExceptionHandlers& handlers = ExceptionHandlers::Handle();
   Array& handled_types = Array::Handle();
   AbstractType& type = Type::Handle();
-  const TypeArguments& no_instantiator = TypeArguments::Handle();
   const bool is_async =
       function().IsAsyncClosure() || function().IsAsyncGenClosure();
   handlers = code().exception_handlers();
   ASSERT(!handlers.IsNull());
   intptr_t num_handlers_checked = 0;
   while (try_index != CatchClauseNode::kInvalidTryIndex) {
     // Detect circles in the exception handler data.
     num_handlers_checked++;
     ASSERT(num_handlers_checked <= handlers.num_entries());
     // Only consider user written handlers for async methods.
     if (!is_async || !handlers.IsGenerated(try_index)) {
       handled_types = handlers.GetHandledTypes(try_index);
       const intptr_t num_types = handled_types.Length();
       for (intptr_t k = 0; k < num_types; k++) {
         type ^= handled_types.At(k);
         ASSERT(!type.IsNull());
         // Uninstantiated types are not added to ExceptionHandlers data.
         ASSERT(type.IsInstantiated());
         if (type.IsMalformed()) {
           continue;
         }
         if (type.IsDynamicType()) {
           return true;
         }
-        if (exc_obj.IsInstanceOf(type, no_instantiator, NULL)) {
+        if (exc_obj.IsInstanceOf(type, Object::null_type_arguments(), NULL)) {
           return true;
         }
       }
     }
     try_index = handlers.OuterTryIndex(try_index);
   }
   return false;
 }
 
 
@@ skipping 3288 matching lines @@
 
 void Debugger::RegisterCodeBreakpoint(CodeBreakpoint* bpt) {
   ASSERT(bpt->next() == NULL);
   bpt->set_next(code_breakpoints_);
   code_breakpoints_ = bpt;
 }
 
 #endif  // !PRODUCT
 
 }  // namespace dart