Revert of Remove more dead code after Object.observe removal

src/js/macros.py

Index: src/js/macros.py
diff --git a/src/js/macros.py b/src/js/macros.py
index 14670218fc0324e999698e3b1928b680b91f686f..5efb6b4b84397b99c73787fbeb03371d97bbc37a 100644
--- a/src/js/macros.py
+++ b/src/js/macros.py
@@ -174,6 +174,16 @@
 # 1-based so index of 1 returns the first capture
 macro OVERRIDE_CAPTURE(override, index) = ((override)[(index)]);
 
+# PropertyDescriptor return value indices - must match
+# PropertyDescriptorIndices in runtime-object.cc.
+define IS_ACCESSOR_INDEX = 0;
+define VALUE_INDEX = 1;
+define GETTER_INDEX = 2;
+define SETTER_INDEX = 3;
+define WRITABLE_INDEX = 4;
+define ENUMERABLE_INDEX = 5;
+define CONFIGURABLE_INDEX = 6;
+
 # For messages.js
 # Matches Script::Type from objects.h
 define TYPE_NATIVE = 0;
@@ -240,6 +250,7 @@
 define kMarkDequeOverflow = 3;
 define kStoreBufferOverflow = 4;
 define kSlotsBufferOverflow = 5;
+define kObjectObserve = 6;
 define kForcedGC = 7;
 define kSloppyMode = 8;
 define kStrictMode = 9;