Migrated several tests from blink to V8 repository.

test/webkit/dfg-obvious-constant-cfa.js

Index: test/webkit/dfg-obvious-constant-cfa.js
diff --git a/test/webkit/concat-while-having-a-bad-time.js b/test/webkit/dfg-obvious-constant-cfa.js
similarity index 77%
copy from test/webkit/concat-while-having-a-bad-time.js
copy to test/webkit/dfg-obvious-constant-cfa.js
index dfda1e08a0b36194b787a44ee12a9693acd8aeaf..fc5d3d6a52ed4cb0e0e036bcf86adf8b410b731f 100644
--- a/test/webkit/concat-while-having-a-bad-time.js
+++ b/test/webkit/dfg-obvious-constant-cfa.js
@@ -22,10 +22,25 @@
 // 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 if the CFA performs constant folding on an obvious set and then get of a captured local, then we don't crash."
 );
 
-Object.defineProperty(Array.prototype, 0, { writable: false });
-shouldBe("[42].concat()", "[42]");
+function bar(a, b) {
+    var x;
+    var y;
+    function baz() {
+        return x + y;
+    }
+    x = 13;
+    y = 16;
+    if (y == 16) {
+        return x + a + b + baz();
+    } else
+        return 24;
+}
 
+var result = 0;
+for (var i = 0; i < 200; ++i)
+    result += bar(i, 1000);
 
+shouldBe("result", "228300");