Make the strict-mode calling convention for contextual calls the default one.

test/mjsunit/harmony/generators-iteration.js

Index: test/mjsunit/harmony/generators-iteration.js
diff --git a/test/mjsunit/harmony/generators-iteration.js b/test/mjsunit/harmony/generators-iteration.js
index 7fad97e9445ce1f5b4a85180be3e6b013c2789fa..18bfc505197ac3f51250e697bae1c523aa0f7a4b 100644
--- a/test/mjsunit/harmony/generators-iteration.js
+++ b/test/mjsunit/harmony/generators-iteration.js
@@ -53,9 +53,10 @@ function TestGenerator(g, expected_values_for_next,
   function testNext(thunk) {
     var iter = thunk();
     for (var i = 0; i < expected_values_for_next.length; i++) {
-      assertIteratorResult(expected_values_for_next[i],
-                           i == expected_values_for_next.length - 1,
-                           iter.next());
+      var v1 = expected_values_for_next[i];
+      var v2 = i == expected_values_for_next.length - 1;
+      // var v3 = iter.next();
+      assertIteratorResult(v1, v2, iter.next());
     }
     assertThrows(function() { iter.next(); }, Error);
   }