Get rid of most uses of 'Temporary macro' HEAP

src/accessors.cc

 // Copyright 2012 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 382 matching lines @@
   Object* script = JSValue::cast(object)->value();
   if (!Script::cast(script)->eval_from_shared()->IsUndefined()) {
     Handle<SharedFunctionInfo> eval_from_shared(
         SharedFunctionInfo::cast(Script::cast(script)->eval_from_shared()));
 
     if (eval_from_shared->script()->IsScript()) {
       Handle<Script> eval_from_script(Script::cast(eval_from_shared->script()));
       return *GetScriptWrapper(eval_from_script);
     }
   }
-  return HEAP->undefined_value();
+  return isolate->heap()->undefined_value();
 }
 
 
 const AccessorDescriptor Accessors::ScriptEvalFromScript = {
   ScriptGetEvalFromScript,
   IllegalSetter,
   0
 };
 
 
@@ skipping 494 matching lines @@
   info->set_data(Smi::FromInt(index));
   Handle<Object> getter = v8::FromCData(isolate, &ModuleGetExport);
   Handle<Object> setter = v8::FromCData(isolate, &ModuleSetExport);
   info->set_getter(*getter);
   if (!(attributes & ReadOnly)) info->set_setter(*setter);
   return info;
 }
 
 
 } }  // namespace v8::internal