Fix testharness result parsing, make "Harness error" count as failure.

third_party/WebKit/LayoutTests/http/tests/xmlhttprequest/send-entity-body-charset-expected.txt

Index: third_party/WebKit/LayoutTests/http/tests/xmlhttprequest/send-entity-body-charset-expected.txt
diff --git a/third_party/WebKit/LayoutTests/http/tests/xmlhttprequest/send-entity-body-charset-expected.txt b/third_party/WebKit/LayoutTests/http/tests/xmlhttprequest/send-entity-body-charset-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..88e32f35be9bac91493b87559d0ae4be773024db
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/http/tests/xmlhttprequest/send-entity-body-charset-expected.txt
@@ -0,0 +1,9 @@
+CONSOLE WARNING: line 15: Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user's experience. For more help, check https://xhr.spec.whatwg.org/.
+This is a testharness.js-based test.
+Harness Error. harness_status.status = 1 , harness_status.message = 2 duplicate test names: "XMLHttpRequest: send() - data argument (1 requested with charset=UTF-8)", "XMLHttpRequest: send() - data argument (1=2&3=4 requested with charset=UTF-8)"
+PASS XMLHttpRequest: send() - data argument (1 requested with charset=UTF-8) 
+PASS XMLHttpRequest: send() - data argument (1 requested with charset=UTF-8) 
+PASS XMLHttpRequest: send() - data argument (1=2&3=4 requested with charset=UTF-8) 
+PASS XMLHttpRequest: send() - data argument (1=2&3=4 requested with charset=UTF-8) 
+Harness: the test ran to completion.
+