Can't open <select> popup with an <option> text including "</script>".

Source/core/page/PagePopupClientTest.cpp

Index: Source/core/page/PagePopupClientTest.cpp
diff --git a/Source/core/page/PagePopupClientTest.cpp b/Source/core/page/PagePopupClientTest.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..90ff07ba5c2c8247d37e74e24288236e6ce19a67
--- /dev/null
+++ b/Source/core/page/PagePopupClientTest.cpp
@@ -0,0 +1,21 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "config.h"
+#include "core/page/PagePopupClient.h"
+
+#include <gtest/gtest.h>
+#include <string>
+
+namespace blink {
+
+TEST(PagePopupClientTest, AddJavaScriptString)
+{
+    RefPtr<SharedBuffer> buffer = SharedBuffer::create();
+    PagePopupClient::addJavaScriptString("abc\r\n'\"</script>", buffer.get());
+    EXPECT_EQ("\"abc\\r\\n'\\\"\\x3C/script>\"", std::string(buffer->data(), buffer->size()));
+}
+
+} // namespace blink
+