Implement navigator.sendBeacon()

LayoutTests/http/tests/navigation/beacon-same-origin-expected.txt

Index: LayoutTests/http/tests/navigation/beacon-same-origin-expected.txt
diff --git a/LayoutTests/http/tests/navigation/beacon-same-origin-expected.txt b/LayoutTests/http/tests/navigation/beacon-same-origin-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..888ee141df0dc1aeee892eb5a1254cba30fc0f0e
--- /dev/null
+++ b/LayoutTests/http/tests/navigation/beacon-same-origin-expected.txt
@@ -0,0 +1,48 @@
+PingLoader dispatched to 'http://127.0.0.1:8000/navigation/resources/save-beacon.php?name=same-origin'.
+PingLoader dispatched to 'http://127.0.0.1:8000/navigation/resources/save-beacon.php?name=same-origin'.
+PingLoader dispatched to 'http://127.0.0.1:8000/navigation/resources/save-beacon.php?name=same-origin'.
+PingLoader dispatched to 'http://127.0.0.1:8000/navigation/resources/save-beacon.php?name=same-origin'.
+Testing navigator.sendBeacon() within same origin.
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+Sending beacon with type: [object String]
+PASS navigator.sendBeacon("resources/save-beacon.php?name=same-origin", payload); is true
+PASS Beacon sent successfully
+PASS Content-Type: text/plain;charset=UTF-8
+PASS Referer: http://127.0.0.1:8000/navigation/beacon-same-origin.html
+PASS Request-Method: POST
+PASS Length: 10
+PASS Body: SameOrigin
+PASS 
+Sending beacon with type: [object Uint32Array]
+PASS navigator.sendBeacon("resources/save-beacon.php?name=same-origin", payload); is true
+PASS Beacon sent successfully
+PASS Content-Type: application/octet-stream
+PASS Referer: http://127.0.0.1:8000/navigation/beacon-same-origin.html
+PASS Request-Method: POST
+PASS Length: 40
+PASS Body: QAAAAEEAAABCAAAAQwAAAEQAAABFAAAARgAAAEcAAABIAAAASQAAAA==
+PASS 
+Sending beacon with type: [object Blob]
+PASS navigator.sendBeacon("resources/save-beacon.php?name=same-origin", payload); is true
+PASS Beacon sent successfully
+PASS Referer: http://127.0.0.1:8000/navigation/beacon-same-origin.html
+PASS Request-Method: POST
+PASS Length: 11
+PASS Body: hello world
+PASS 
+Sending beacon with type: [object FormData]
+PASS navigator.sendBeacon("resources/save-beacon.php?name=same-origin", payload); is true
+PASS Beacon sent successfully
+PASS Content-Type: multipart/form-data;
+PASS Referer: http://127.0.0.1:8000/navigation/beacon-same-origin.html
+PASS Request-Method: POST
+PASS Length: 9
+PASS Body: key=value
+PASS 
+PASS successfullyParsed is true
+
+TEST COMPLETE
+