A couple of other "stack overflow" vs. "has_pending_exception()" issues in debugger fixed.

test/mjsunit/regress/regress-crbug-505007-1.js

Index: test/mjsunit/regress/regress-crbug-505007-1.js
diff --git a/test/mjsunit/regress/regress-crbug-501711.js b/test/mjsunit/regress/regress-crbug-505007-1.js
similarity index 75%
copy from test/mjsunit/regress/regress-crbug-501711.js
copy to test/mjsunit/regress/regress-crbug-505007-1.js
index f8eda6e8d8e26f41b79e05af891b0f5446b5cd37..6012577aaa4dadf0ce7eb3210c39aa341155837d 100644
--- a/test/mjsunit/regress/regress-crbug-501711.js
+++ b/test/mjsunit/regress/regress-crbug-505007-1.js
@@ -2,13 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --stack-size=100
+// Flags: --stack-size=100 --allow-natives-syntax
 
 function f() {
   try {
     f();
   } catch(e) {
-    Realm.create();
+    %GetDebugContext();
   }
 }
 f();