Make testharness.js tests fail on uncaught exceptions

third_party/WebKit/LayoutTests/http/tests/serviceworker/registration-expected.txt

Index: third_party/WebKit/LayoutTests/http/tests/serviceworker/registration-expected.txt
diff --git a/third_party/WebKit/LayoutTests/http/tests/serviceworker/registration-expected.txt b/third_party/WebKit/LayoutTests/http/tests/serviceworker/registration-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..5547c3f26ce336ff57f58378a196fba4decc2baa
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/http/tests/serviceworker/registration-expected.txt
@@ -0,0 +1,40 @@
+CONSOLE ERROR: Uncaught (in promise) NetworkError: Failed to register a ServiceWorker: A bad HTTP response code (404) was received when fetching the script.
+This is a testharness.js-based test.
+PASS Registering normal scope 
+PASS Registering scope with fragment 
+PASS Registering same scope as the script directory 
+PASS Registering same scope as the script directory without the last slash 
+PASS Registration scope outside the script directory 
+PASS Registering scope outside domain 
+PASS Registering script outside domain 
+PASS Registering non-existent script 
+PASS Registering invalid chunked encoding script 
+PASS Registering invalid chunked encoding script with flush 
+PASS Registering script with no MIME type 
+PASS Registering script with bad MIME type 
+PASS Registering redirected script 
+PASS Registering script including parse error 
+PASS Registering script including undefined error 
+PASS Registering script including uncaught exception 
+PASS Registering script including caught exception 
+PASS Registering script importing malformed script 
+PASS Registering script importing non-existent script 
+PASS Scope including URL-encoded multibyte characters 
+PASS Scope including non-escaped multibyte characters 
+PASS Script URL including URL-encoded slash 
+PASS Script URL including uppercase URL-encoded slash 
+PASS Scope including URL-encoded slash 
+PASS Script URL including URL-encoded backslash 
+PASS Script URL including uppercase URL-encoded backslash 
+PASS Scope including URL-encoded backslash 
+PASS Script URL including self-reference 
+PASS Scope including self-reference 
+PASS Script URL including parent-reference 
+PASS Scope including parent-reference 
+PASS Scope including parent-reference and not under the script directory 
+PASS Script URL including consecutive slashes 
+PASS Scope including consecutive slashes 
+PASS Script URL is same-origin filesystem: URL 
+PASS Scope URL is same-origin filesystem: URL 
+Harness: the test ran to completion.
+