Disable AboutFlagsBrowserTest.FormRestore on Windows

TBR=ellyjones@chromium.org

Bug: 1066456
Change-Id: I362ca1266a31e57122402bd4d620db49a60c8e01
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2128975Reviewed-by: Dominique Fauteux-Chapleau <domfc@chromium.org>
Commit-Queue: Dominique Fauteux-Chapleau <domfc@chromium.org>
Cr-Commit-Position: refs/heads/master@{#754916}

chrome/browser/about_flags_browsertest.cc

@@ -350,7 +350,13 @@ IN_PROC_BROWSER_TEST_P(AboutFlagsBrowserTest, DISABLED_ExpiredFlagDoesntApply) {
 }
 #endif
 
-IN_PROC_BROWSER_TEST_P(AboutFlagsBrowserTest, FormRestore) {
+// Flaky on Windows 7: https://crbug.com/1066456
+#if defined(OS_WIN)
+#define MAYBE_FormRestore DISABLED_FormRestore
+#else
+#define MAYBE_FormRestore FormRestore
+#endif
+IN_PROC_BROWSER_TEST_P(AboutFlagsBrowserTest, MAYBE_FormRestore) {
   NavigateToFlagsPage();
   content::WebContents* contents =
       browser()->tab_strip_model()->GetActiveWebContents();