Migrated several tests from blink to V8 repository.

test/webkit/unexpected-constant-crash.js

Index: test/webkit/unexpected-constant-crash.js
diff --git a/test/webkit/resources/standalone-post.js b/test/webkit/unexpected-constant-crash.js
similarity index 86%
copy from test/webkit/resources/standalone-post.js
copy to test/webkit/unexpected-constant-crash.js
index d157e78bfa084329e2ec1a9b7d6ad456e904c152..cbca94b59937de97790edf8b194120892db272fd 100644
--- a/test/webkit/resources/standalone-post.js
+++ b/test/webkit/unexpected-constant-crash.js
@@ -21,6 +21,10 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-wasPostTestScriptParsed = true;
+description(
+"This test checks that the regexp and unexpected constant counters are not confused with each other. It will fail with an assertion failure in a debug build if this is the case."
+);
 
-finishJSTest();
+var r = / /;
+var s;
+delete s;