Migrate more tests from blink repository.

test/webkit/fast/js/end-in-string-escape.js

Index: test/webkit/fast/js/end-in-string-escape.js
diff --git a/test/webkit/instanceof-operator.js b/test/webkit/fast/js/end-in-string-escape.js
similarity index 85%
copy from test/webkit/instanceof-operator.js
copy to test/webkit/fast/js/end-in-string-escape.js
index 1230181584337c86a13846618b2cefe510239e59..e5c0906ada9390a472f523ae5a5daab9356ea0b3 100644
--- a/test/webkit/instanceof-operator.js
+++ b/test/webkit/fast/js/end-in-string-escape.js
@@ -21,13 +21,11 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-description(
-"instanceof test"
-);
+description('Test for <a href="https://bugs.webkit.org/show_bug.cgi?id=33641">bug 33641</a>: Assertion failure in Lexer.cpp if input stream ends while in string escape.');
+
+debug("Passed if no assertion failure.");
 
-getterCalled = false;
 try {
-    ({} instanceof { get prototype(){ getterCalled = true; } });
-} catch (e) {
+    eval('"\\');
+} catch (ex) {
 }
-shouldBeFalse("getterCalled");