Add 4 TestExpecations from WebKit Linux Trusty Leak

After landing the CL enabling WPT tests that don't necessarily
correspond to real files (crrev.com/c/461722/), 4 Timeout 
TestExpectations from that CL turned up as Failures on WebKit Linux 
Trusty Leak. 

Bug: 703837
TBR: qyearsley@chromium.org
Change-Id: Ideb2d49c866f04d5105c0ad30446b6c92124f0f2
Reviewed-on: https://chromium-review.googlesource.com/566019
Commit-Queue: Jeff Carpenter <jeffcarp@chromium.org>
Reviewed-by: Quinten Yearsley <qyearsley@chromium.org>
Reviewed-by: Bret Sepulveda <bsep@chromium.org>
Cr-Commit-Position: refs/heads/master@{#485464}

third_party/WebKit/LayoutTests/TestExpectations

@@ -2828,13 +2828,13 @@ crbug.com/709227 http/tests/inspector-protocol/network/disable-interception-midw
 # Timeouts
 crbug.com/709227 external/wpt/html/infrastructure/safe-passing-of-structured-data/shared-array-buffers/serialization-via-idb.any.worker.html [ Timeout ]
 crbug.com/709227 external/wpt/websockets/binary/001.html?wss [ Timeout ]
-crbug.com/709227 external/wpt/websockets/binary/002.html?wss [ Timeout ]
-crbug.com/709227 external/wpt/websockets/binary/004.html?wss [ Timeout ]
+crbug.com/709227 external/wpt/websockets/binary/002.html?wss [ Failure Timeout ]
+crbug.com/709227 external/wpt/websockets/binary/004.html?wss [ Failure Timeout ]
 crbug.com/709227 external/wpt/websockets/binary/005.html?wss [ Timeout ]
-crbug.com/709227 external/wpt/websockets/extended-payload-length.html?wss [ Timeout ]
+crbug.com/709227 external/wpt/websockets/extended-payload-length.html?wss [ Failure Timeout ]
 crbug.com/709227 external/wpt/websockets/interfaces/WebSocket/bufferedAmount/bufferedAmount-arraybuffer.html?wss [ Timeout ]
 crbug.com/709227 external/wpt/websockets/interfaces/WebSocket/bufferedAmount/bufferedAmount-blob.html?wss [ Timeout ]
-crbug.com/709227 external/wpt/websockets/interfaces/WebSocket/bufferedAmount/bufferedAmount-large.html?wss [ Timeout ]
+crbug.com/709227 external/wpt/websockets/interfaces/WebSocket/bufferedAmount/bufferedAmount-large.html?wss [ Failure Timeout ]
 crbug.com/709227 external/wpt/websockets/interfaces/WebSocket/bufferedAmount/bufferedAmount-unicode.html?wss [ Timeout ]
 crbug.com/709227 external/wpt/websockets/interfaces/WebSocket/events/018.html?wss [ Timeout ]
 crbug.com/709227 external/wpt/websockets/interfaces/WebSocket/send/005.html?wss [ Timeout ]