Create a internal, global native context used only for generated code stubs

test/cctest/test-api.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 11642 matching lines @@
     CHECK_EQ(42, script->Run()->Int32Value());
   }
 }
 
 
 static int GetGlobalObjectsCount() {
   int count = 0;
   i::HeapIterator it(CcTest::heap());
   for (i::HeapObject* object = it.next(); object != NULL; object = it.next())
     if (object->IsJSGlobalObject()) count++;
-  return count;
+  // Subtract one to compensate for the code stub context that is always present
+  return count - 1;
 }
 
 
 static void CheckSurvivingGlobalObjectsCount(int expected) {
   // We need to collect all garbage twice to be sure that everything
   // has been collected.  This is because inline caches are cleared in
   // the first garbage collection but some of the maps have already
   // been marked at that point.  Therefore some of the maps are not
   // collected until the second garbage collection.
   CcTest::heap()->CollectAllGarbage();
@@ skipping 10174 matching lines @@
       "    fake.age;\n"
       "    result = 1;\n"
       "  } catch (e) {\n"
       "  }\n"
       "  test(d+1);\n"
       "}\n"
       "test(0);\n"
       "result;\n",
       0);
 }