Get rid of most uses of 'Temporary macro' HEAP

src/isolate.h

 // 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 1514 matching lines @@
 
 
 // Tells whether the native context is marked with out of memory.
 inline bool Context::has_out_of_memory() {
   return native_context()->out_of_memory()->IsTrue();
 }
 
 
 // Mark the native context with out of memory.
 inline void Context::mark_out_of_memory() {
-  native_context()->set_out_of_memory(HEAP->true_value());
+  native_context()->set_out_of_memory(GetIsolate()->heap()->true_value());
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_ISOLATE_H_