Merged r19804, r19890, r19894, r19935 into 3.24 branch.

test/mjsunit/regress/regress-crbug-351262.js

Index: test/mjsunit/regress/regress-crbug-351262.js
diff --git a/test/mjsunit/regress/regress-347904.js b/test/mjsunit/regress/regress-crbug-351262.js
similarity index 54%
copy from test/mjsunit/regress/regress-347904.js
copy to test/mjsunit/regress/regress-crbug-351262.js
index 1a27b054a4b89b8e8841c9311f1c155aea7ce4d7..a2f4eadc0de5c2bd7d27f6e78ff9940fce7b0f85 100644
--- a/test/mjsunit/regress/regress-347904.js
+++ b/test/mjsunit/regress/regress-crbug-351262.js
@@ -2,11 +2,5 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --allow-natives-syntax --stress-runs=2
-
-var v = /abc/;
-function f() {
-  v = 1578221999;
-};
-%OptimizeFunctionOnNextCall(f);
-f();
+for (var x in this) {};
+JSON.stringify(this);