Mark virtual/mojo-loading/http/tests/xmlhttprequest/workers/xmlhttpre…

…quest-response-type-blob.html as flaky timeout.

BUG=659917,670562
TBR=yhirano@chromium.org
NOTRY=true

Review-Url: https://codereview.chromium.org/2547983002
Cr-Commit-Position: refs/heads/master@{#436018}

third_party/WebKit/LayoutTests/TestExpectations

@@ -1635,6 +1635,7 @@ crbug.com/659917 virtual/mojo-loading/http/tests/xmlhttprequest/upload-onprogres
 crbug.com/659917 virtual/mojo-loading/http/tests/xmlhttprequest/upload-progress-events.html [ Failure Timeout ]
 crbug.com/659917 virtual/mojo-loading/http/tests/xmlhttprequest/workers/upload-onprogress-event.html [ Failure ]
 crbug.com/659917 virtual/mojo-loading/http/tests/xmlhttprequest/upload-onloadend-event-after-abort.html [ Timeout ]
+crbug.com/659917 virtual/mojo-loading/http/tests/xmlhttprequest/workers/xmlhttprequest-response-type-blob.html [ Pass Timeout ]
 crbug.com/659917 virtual/mojo-loading/http/tests/xmlhttprequest/workers/xmlhttprequest-response-type-blob-sync.html [ Pass Timeout ]
 crbug.com/659917 virtual/mojo-loading/http/tests/xmlhttprequest/workers/shared-worker-response-type-blob-sync.html [ Pass Timeout ]