Simplify pending message object handling.

src/assembler.cc

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // All Rights Reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 // - Redistributions of source code must retain the above copyright notice,
 // this list of conditions and the following disclaimer.
 //
@@ skipping 1249 matching lines @@
   return ExternalReference(isolate->scheduled_exception_address());
 }
 
 
 ExternalReference ExternalReference::address_of_pending_message_obj(
     Isolate* isolate) {
   return ExternalReference(isolate->pending_message_obj_address());
 }
 
 
-ExternalReference ExternalReference::address_of_has_pending_message(
-    Isolate* isolate) {
-  return ExternalReference(isolate->has_pending_message_address());
-}
-
-
 ExternalReference ExternalReference::address_of_min_int() {
   return ExternalReference(reinterpret_cast<void*>(&double_constants.min_int));
 }
 
 
 ExternalReference ExternalReference::address_of_one_half() {
   return ExternalReference(reinterpret_cast<void*>(&double_constants.one_half));
 }
 
 
@@ skipping 391 matching lines @@
   RecordRelocInfo(RelocInfo::JS_RETURN);
 }
 
 
 void Assembler::RecordDebugBreakSlot() {
   positions_recorder()->WriteRecordedPositions();
   EnsureSpace ensure_space(this);
   RecordRelocInfo(RelocInfo::DEBUG_BREAK_SLOT);
 }
 } }  // namespace v8::internal