Migrated several tests from blink to V8 repository.

test/webkit/dfg-proto-access-inline-osr-exit.js

Index: test/webkit/dfg-proto-access-inline-osr-exit.js
diff --git a/test/webkit/concat-while-having-a-bad-time.js b/test/webkit/dfg-proto-access-inline-osr-exit.js
similarity index 80%
copy from test/webkit/concat-while-having-a-bad-time.js
copy to test/webkit/dfg-proto-access-inline-osr-exit.js
index dfda1e08a0b36194b787a44ee12a9693acd8aeaf..35299806dafd76a0a62265f60511fc718e0d7bb0 100644
--- a/test/webkit/concat-while-having-a-bad-time.js
+++ b/test/webkit/dfg-proto-access-inline-osr-exit.js
@@ -22,10 +22,23 @@
 // 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."
+"Tests what happens when we OSR exit on an inlined prototype access due to a change in the prototype chain."
 );
 
-Object.defineProperty(Array.prototype, 0, { writable: false });
-shouldBe("[42].concat()", "[42]");
+function foo(o) {
+    return o.g.f;
+}
 
+function Thingy() {
+}
+
+var myProto = {f:42};
+
+Thingy.prototype = myProto;
+
+for (var i = 0; i < 200; ++i) {
+    if (i == 150)
+        myProto.g = 67;
+    shouldBe("foo({g:new Thingy()})", "42");
+}