[sheriff] Disable FromBackgroundServiceWorker_NoSniffXml on Win

TBR=dimich@chromium.org
NOTRY=true

Bug: 1073052
Change-Id: I69e19ecfe2edb3facfb5950585b3d754b71f58c3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2238586Reviewed-by: Xida Chen <xidachen@chromium.org>
Commit-Queue: Xida Chen <xidachen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#776617}

chrome/browser/extensions/corb_and_cors_extension_browsertest.cc

@@ -1704,7 +1704,7 @@ IN_PROC_BROWSER_TEST_P(CorbAndCorsExtensionBrowserTest,
   }
 }
 
-#if defined(OS_LINUX)
+#if defined(OS_LINUX) || defined(OS_WIN)
 // Flaky on Linux, especially under sanitizers: https://crbug.com/1073052
 #define MAYBE_FromBackgroundServiceWorker_NoSniffXml \
   DISABLED_FromBackgroundServiceWorker_NoSniffXml