postmortem: fix postmortem build

This is a commit of https://chromiumcodereview.appspot.com/10539132/ for Fedor Indutny.


git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11801 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

tools/gen-postmortem-metadata.py

@@ -78,8 +78,8 @@ consts_misc = [
     { 'name': 'SmiValueShift',          'value': 'kSmiTagSize' },
     { 'name': 'PointerSizeLog2',        'value': 'kPointerSizeLog2' },
 
-    { 'name': 'prop_idx_content',
-        'value': 'DescriptorArray::kContentArrayIndex' },
+    { 'name': 'prop_idx_transitions',
+        'value': 'DescriptorArray::kTransitionsIndex' },
     { 'name': 'prop_idx_first',
         'value': 'DescriptorArray::kFirstIndex' },
     { 'name': 'prop_type_field',