Mark PrerenderBrowserTest.PrerenderDelayLoadPlugin as FLAKY on Mac

BUG=100514
TBR=mmenke

Review URL: https://chromiumcodereview.appspot.com/10852013

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@149986 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/prerender/prerender_browsertest.cc

@@ -1140,6 +1140,9 @@ IN_PROC_BROWSER_TEST_F(PrerenderBrowserTest, PrerenderAlertAfterOnload) {
 #if defined(USE_AURA)
 // http://crbug.com/103496
 #define MAYBE_PrerenderDelayLoadPlugin DISABLED_PrerenderDelayLoadPlugin
+#elif defined(OS_MACOSX)
+// http://crbug.com/100514
+#define MAYBE_PrerenderDelayLoadPlugin FLAKY_PrerenderDelayLoadPlugin
 #else
 #define MAYBE_PrerenderDelayLoadPlugin PrerenderDelayLoadPlugin
 #endif