Address Regis' comments, replace AbstractType with Type where possible.

runtime/vm/code_generator_ia32.cc

 // Copyright (c) 2011, 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/globals.h"  // Needed here to get TARGET_ARCH_IA32.
 #if defined(TARGET_ARCH_IA32)
 
 #include "vm/code_generator.h"
 
 #include "lib/error.h"
@@ skipping 2240 matching lines @@
   }
   if (outer_function.IsFactory()) {
     instantiator_class = outer_function.signature_class();
   } else {
     instantiator_class = outer_function.owner();
   }
   if (instantiator_class.NumTypeParameters() == 0) {
     // The type arguments are compile time constants.
     TypeArguments& type_arguments = TypeArguments::ZoneHandle();
     // TODO(regis): Temporary type should be allocated in new gen heap.
-    AbstractType& type = AbstractType::Handle(
+    Type& type = Type::Handle(
         Type::NewParameterizedType(instantiator_class, type_arguments));
     String& errmsg = String::Handle();
     type = ClassFinalizer::FinalizeAndCanonicalizeType(type, &errmsg);
     if (!errmsg.IsNull()) {
       ErrorMsg(token_index, errmsg.ToCString());
     }
     type_arguments = type.arguments();
     __ PushObject(type_arguments);
   } else {
     ASSERT(parsed_function().instantiator() != NULL);
@@ skipping 470 matching lines @@
                         message_buffer, kMessageBufferSize,
                         format, args);
   va_end(args);
   Isolate::Current()->long_jump_base()->Jump(1, message_buffer);
   UNREACHABLE();
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_IA32