X64: Fixups in heap-test.cc to make it compile in X64 mode.

src/x64/assembler-x64.cc

 // Copyright 2009 the V8 project authors. 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.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 87 matching lines @@
 }
 
 void Assembler::bind(Label* a) {
   UNIMPLEMENTED();
 }
 
 Assembler::~Assembler()  {
   UNIMPLEMENTED();
 }
 
+
+void Assembler::nop() {
+  UNIMPLEMENTED();
+}
+
+
 void BreakLocationIterator::ClearDebugBreakAtReturn() {
   UNIMPLEMENTED();
 }
 
 bool BreakLocationIterator::IsDebugBreakAtReturn()  {
   UNIMPLEMENTED();
   return false;
 }
 
 void BreakLocationIterator::SetDebugBreakAtReturn()  {
@@ skipping 227 matching lines @@
 }
 
 void CodeGenerator::VisitThisFunction(ThisFunction* a) {
   UNIMPLEMENTED();
 }
 
 void CpuFeatures::Probe()  {
   UNIMPLEMENTED();
 }
 
+
+bool Debug::IsDebugBreakAtReturn(v8::internal::RelocInfo*) {
+  UNIMPLEMENTED();
+  return false;
+}
+
 void Debug::GenerateCallICDebugBreak(MacroAssembler* a) {
   UNIMPLEMENTED();
 }
 
 void Debug::GenerateConstructCallDebugBreak(MacroAssembler* a) {
   UNIMPLEMENTED();
 }
 
 void Debug::GenerateKeyedLoadICDebugBreak(MacroAssembler* a) {
   UNIMPLEMENTED();
@@ skipping 399 matching lines @@
   UNIMPLEMENTED();
   return NULL;
 }
 
 byte* JavaScriptFrame::GetCallerStackPointer() const {
   UNIMPLEMENTED();
   return NULL;
 }
 
 } }  // namespace v8::internal