Remove special debug ExternalReferences.

src/assembler.h

 // 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 776 matching lines @@
   ExternalReference(ApiFunction* ptr, Type type, Isolate* isolate);
 
   ExternalReference(Builtins::Name name, Isolate* isolate);
 
   ExternalReference(Runtime::FunctionId id, Isolate* isolate);
 
   ExternalReference(const Runtime::Function* f, Isolate* isolate);
 
   ExternalReference(const IC_Utility& ic_utility, Isolate* isolate);
 
-  ExternalReference(const Debug_Address& debug_address, Isolate* isolate);
-
   explicit ExternalReference(StatsCounter* counter);
 
   ExternalReference(Isolate::AddressId id, Isolate* isolate);
 
   explicit ExternalReference(const SCTableReference& table_ref);
 
   // Isolate as an external reference.
   static ExternalReference isolate_address(Isolate* isolate);
 
   // One-of-a-kind references. These references are not part of a general
@@ skipping 99 matching lines @@
 
   static ExternalReference math_exp_constants(int constant_index);
   static ExternalReference math_exp_log_table();
 
   static ExternalReference page_flags(Page* page);
 
   static ExternalReference ForDeoptEntry(Address entry);
 
   static ExternalReference cpu_features();
 
+  static ExternalReference debug_after_break_target_address(Isolate* isolate);
+  static ExternalReference debug_restarter_frame_function_pointer_address(
+      Isolate* isolate);
+
   static ExternalReference is_profiling_address(Isolate* isolate);
   static ExternalReference invoke_function_callback(Isolate* isolate);
   static ExternalReference invoke_accessor_getter_callback(Isolate* isolate);
 
   Address address() const { return reinterpret_cast<Address>(address_); }
 
   // Function Debug::Break()
   static ExternalReference debug_break(Isolate* isolate);
 
   // Used to check if single stepping is enabled in generated code.
@@ skipping 221 matching lines @@
 
  private:
   int32_t multiplier_;
   int32_t shift_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_ASSEMBLER_H_