[Sheriff] Disable ActivateWithReloadExtensionsMenuBrowserTest.ActivateWithReload on Windows

TBR=finnur@chromium.org

Bug: 1048956
Change-Id: Iea2f9bf908dfe9ada1a25794cff70a4a85d6030f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2051146Reviewed-by: Kristi Park <kristipark@chromium.org>
Commit-Queue: Kristi Park <kristipark@chromium.org>
Cr-Commit-Position: refs/heads/master@{#740426}

chrome/browser/ui/views/extensions/extensions_menu_view_browsertest.cc

@@ -555,8 +555,14 @@ class ActivateWithReloadExtensionsMenuBrowserTest
     : public ExtensionsMenuViewBrowserTest,
       public ::testing::WithParamInterface<bool> {};
 
+// Flaky on windows, http://crbug.com/1048956
+#if defined(OS_WIN)
+#define MAYBE_ActivateWithReload DISABLED_ActivateWithReload
+#else
+#define MAYBE_ActivateWithReload ActivateWithReload
+#endif
 IN_PROC_BROWSER_TEST_P(ActivateWithReloadExtensionsMenuBrowserTest,
-                       ActivateWithReload) {
+                       MAYBE_ActivateWithReload) {
   ASSERT_TRUE(embedded_test_server()->Start());
   LoadTestExtension("extensions/blocked_actions/content_scripts");
   auto extension = extensions().back();