ChromeNetworkServiceBrowserTest.EncryptedCookies on Windows.

It keeps flaking, e.g. see
https://ci.chromium.org/p/chromium/builders/ci/Win7%20Tests%20%281%29/97387
https://ci.chromium.org/p/chromium/builders/ci/Win7%20Tests%20%281%29/97381
https://ci.chromium.org/p/chromium/builders/ci/Win7%20Tests%20%281%29/97370

In the last 100 runs it has flaked 7 times.

TBR=falken@chromium.org

Bug: 868667
Change-Id: Ib0a809f85eb919ec098f7c80b8b47e2944e6a72f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1937127Reviewed-by: John Abd-El-Malek <jam@chromium.org>
Commit-Queue: John Abd-El-Malek <jam@chromium.org>
Cr-Commit-Position: refs/heads/master@{#719202}

chrome/browser/net/chrome_network_service_browsertest.cc

@@ -116,8 +116,8 @@ IN_PROC_BROWSER_TEST_P(ChromeNetworkServiceBrowserTest, PRE_EncryptedCookies) {
   FlushCookies(cookie_manager);
 }
 
-// This flakes on Mac10.12: http://crbug.com/1019655
-#if defined(OS_MACOSX)
+// This flakes on Mac10.12 and Windows: http://crbug.com/868667
+#if defined(OS_MACOSX) || defined(OS_WIN)
 #define MAYBE_EncryptedCookies DISABLED_EncryptedCookies
 #else
 #define MAYBE_EncryptedCookies EncryptedCookies