Fix parallel recompilation wrt transition maps dependency.

test/mjsunit/parallel-invalidate-transition-map.js

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-// Flags: --allow-natives-syntax
+// Flags: --track-fields --track-double-fields --allow-natives-syntax
 // Flags: --parallel-recompilation --parallel-recompilation-delay=50
 
 function assertUnoptimized(fun) {
   assertTrue(%GetOptimizationStatus(fun) != 1);
 }
 
-function f(foo) { return foo.bar(); }
+function new_object() {
+  var o = {};
+  o.a = 1;
+  o.b = 2;
+  return o;
+}
 
-var o = {};
-o.__proto__ = { __proto__: { bar: function() { return 1; } } };
+function add_field(obj) {
+  obj.c = 3;
+}
 
-assertEquals(1, f(o));
-assertEquals(1, f(o));
+add_field(new_object());
+add_field(new_object());
+%OptimizeFunctionOnNextCall(add_field, "parallel");
 
-%OptimizeFunctionOnNextCall(f, "parallel");
-assertEquals(1, f(o));     // Trigger optimization.
-assertUnoptimized(f);      // Optimization not yet done.
-// Change the prototype chain during optimization to trigger map invalidation.
-o.__proto__.__proto__ = { bar: function() { return 2; } };
-%CompleteOptimization(f);  // Conclude optimization with...
-assertUnoptimized(f);      // ... bailing out due to map dependency.
-assertEquals(2, f(o));
+var o = new_object();
+add_field(o);                      // Trigger optimization.
+assertUnoptimized(add_field);      // Not yet optimized.
+o.c = 2.2;                         // Invalidate transition map.
+%CompleteOptimization(add_field);  // Conclude optimization with...
+assertUnoptimized(add_field);      // ... bailing out due to map dependency.
+