Add Win as a platform to two flaky tests in TestExpectations

third_party/WebKit/LayoutTests/TestExpectations

Index: third_party/WebKit/LayoutTests/TestExpectations
diff --git a/third_party/WebKit/LayoutTests/TestExpectations b/third_party/WebKit/LayoutTests/TestExpectations
index 781821dedc96da8fb7d43a5b6cf7f2180a04c55e..d7b978e13ecc1a425f04dcd72811d720e465e202 100644
--- a/third_party/WebKit/LayoutTests/TestExpectations
+++ b/third_party/WebKit/LayoutTests/TestExpectations
@@ -1321,7 +1321,7 @@ crbug.com/619539 [ Win ] virtual/mojo-loading/http/tests/workers/terminate-durin
 # Temporary until we start generating Trusty baselines.
 crbug.com/498021 [ Linux ] fast/text/unicode-fallback-font.html [ Failure ]
 crbug.com/498021 [ Linux ] fast/forms/month/month-appearance-l10n.html [ Failure ]
-crbug.com/498021 [ Linux ] fast/text/ellipsis-stroked.html [ Failure ]
+crbug.com/498021 [ Linux Win ] fast/text/ellipsis-stroked.html [ Failure ]
 crbug.com/498021 [ Linux ] fast/text/emphasis-complex.html [ Failure ]
 crbug.com/498021 [ Linux ] fast/text/international/danda-space.html [ Failure ]
 crbug.com/498021 [ Linux ] fast/text/international/hindi-whitespace.html [ Failure ]
@@ -2226,7 +2226,7 @@ crbug.com/610835 http/tests/security/XFrameOptions/x-frame-options-deny-multiple
 crbug.com/610835 virtual/mojo-loading/http/tests/security/XFrameOptions/x-frame-options-deny-multiple-clients.html [ Failure Pass ]
 
 # Added 2016-12-12
-crbug.com/673539 [ Linux ] css3/filters/effect-contrast-hw.html [ Pass Failure ]
+crbug.com/673539 [ Linux Win ] css3/filters/effect-contrast-hw.html [ Pass Failure ]
 
 # Added 2016-12-14
 crbug.com/674048 [ Linux ] virtual/mojo-loading/http/tests/navigation/image-load-in-unload-handler.html [ Pass Timeout ]