[Win][Flaky] Disable BrowserFocusTest.FocusOnNaviate on Win

This test is already disabled for all other platforms but (as linked in
the bug) Windows bots also reported flakes. Therefore, disable it for
windows as well.

TBR=clamy@chromium.org

Bug: 665296
Change-Id: I3991d966d72509324c00c28d82ace55d698eecb4
Reviewed-on: https://chromium-review.googlesource.com/1181262Reviewed-by: Friedrich Horschig <fhorschig@chromium.org>
Commit-Queue: Friedrich Horschig <fhorschig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#584458}

chrome/browser/ui/browser_focus_uitest.cc

@@ -671,13 +671,8 @@ IN_PROC_BROWSER_TEST_F(BrowserFocusTest, NavigateFromOmniboxIntoNewTab) {
   EXPECT_FALSE(IsViewFocused(VIEW_ID_OMNIBOX));
 }
 
-// Flaky on Mac, ChromeOS and Win (http://crbug.com/665296).
-#if defined(OS_MACOSX) || defined(OS_CHROMEOS) || defined(OS_WIN)
-#define MAYBE_FocusOnNavigate DISABLED_FocusOnNavigate
-#else
-#define MAYBE_FocusOnNavigate FocusOnNavigate
-#endif
-IN_PROC_BROWSER_TEST_F(BrowserFocusTest, MAYBE_FocusOnNavigate) {
+// Flaky on all platforms (http://crbug.com/665296).
+IN_PROC_BROWSER_TEST_F(BrowserFocusTest, DISABLED_FocusOnNavigate) {
   // Needed on Mac.
   // TODO(warx): check why it is needed on Mac.
   ASSERT_TRUE(ui_test_utils::BringBrowserWindowToFront(browser()));