Migrated several tests from blink to V8 repository.

test/webkit/stack-unwinding.js

Index: test/webkit/stack-unwinding.js
diff --git a/test/webkit/concat-while-having-a-bad-time.js b/test/webkit/stack-unwinding.js
similarity index 61%
copy from test/webkit/concat-while-having-a-bad-time.js
copy to test/webkit/stack-unwinding.js
index dfda1e08a0b36194b787a44ee12a9693acd8aeaf..8c737fa00d10ed86681c93432ea4446d877e4a4c 100644
--- a/test/webkit/concat-while-having-a-bad-time.js
+++ b/test/webkit/stack-unwinding.js
@@ -22,10 +22,44 @@
 // 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 test checks that JavaScriptCore does not crash when uwinding the stack that includes a host function."
+
 );
 
-Object.defineProperty(Array.prototype, 0, { writable: false });
-shouldBe("[42].concat()", "[42]");
+function twoHostFunctions() {
+    var stack = [];
+    stack.push({ "args": twoHostFunctions.arguments });
+    stack.push({ "args": twoHostFunctions.arguments });
+    testPassed("Two host functions called in a row.");
+}
+
+function arrayOperatorFunction(element) {
+    return element + 5;
+}
+
+var myArray = new Array (0, 1, 2);
+function hostCallsUser(array) {
+    return array.map(arrayOperatorFunction);
+}
+
+function throwException() {
+    throw "Exception thrown";
+}
+
+function hostAndException() {
+    var stack = [];
+    stack.push({ "args": hostAndException.arguments });
+    throwException();
+}
+
+twoHostFunctions();
+myArray = hostCallsUser(myArray);
+shouldBe(myArray, new Array( 5, 6, 7 ) );
 
+try {
+    hostAndException();
+} catch (e) {
+    testPassed("Exception thrown and caught");
+}