Migrated several tests from blink to V8 repository.

test/webkit/boxed-double-to-int.js

Index: test/webkit/boxed-double-to-int.js
diff --git a/test/webkit/concat-while-having-a-bad-time.js b/test/webkit/boxed-double-to-int.js
similarity index 77%
copy from test/webkit/concat-while-having-a-bad-time.js
copy to test/webkit/boxed-double-to-int.js
index dfda1e08a0b36194b787a44ee12a9693acd8aeaf..578ba047e4646b4d856d2177e4ebe8a13e964afb 100644
--- a/test/webkit/concat-while-having-a-bad-time.js
+++ b/test/webkit/boxed-double-to-int.js
@@ -22,10 +22,17 @@
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 description(
-"Tests the behavior of Array.prototype.concat while the array is having a bad time due to one of the elements we are concatenating."
+"This tests that converting a boxed double to an integer does not crash the register allocator."
 );
 
-Object.defineProperty(Array.prototype, 0, { writable: false });
-shouldBe("[42].concat()", "[42]");
-
+function boxedDoubleToInt(x, y) {
+    var y = x / 2;
+    var z = y + 2;
+    return (y | 1) + z;
+}
 
+shouldBe("boxedDoubleToInt(1, 2)", "3.5");
+shouldBe("boxedDoubleToInt(3, 4)", "4.5");
+shouldBe("boxedDoubleToInt(5, 6)", "7.5");
+shouldBe("boxedDoubleToInt(7, 8)", "8.5");
+shouldBe("boxedDoubleToInt(9, 10)", "11.5");