Disable TopDocumentIsolationTest.FramesForSitesInHistory on Mac

content/browser/top_document_isolation_browsertest.cc

Index: content/browser/top_document_isolation_browsertest.cc
diff --git a/content/browser/top_document_isolation_browsertest.cc b/content/browser/top_document_isolation_browsertest.cc
index dd4541f23185caed04f5107cef2316f837af94ba..a27cd7fcf817b4d01ebcbeba1cab4b0127d0cdcc 100644
--- a/content/browser/top_document_isolation_browsertest.cc
+++ b/content/browser/top_document_isolation_browsertest.cc
@@ -381,7 +381,15 @@ IN_PROC_BROWSER_TEST_F(TopDocumentIsolationTest,
       DepictFrameTree(root()));
 }
 
-IN_PROC_BROWSER_TEST_F(TopDocumentIsolationTest, FramesForSitesInHistory) {
+// Flaky on Mac. See https://crbug.com/611344.
+#if defined(OS_MACOSX)
+#define MAYBE_FramesForSitesInHistory DISABLED_FramesForSitesInHistory
+#else
+#define MAYBE_FramesForSitesInHistory FramesForSitesInHistory
+#endif
+
+IN_PROC_BROWSER_TEST_F(TopDocumentIsolationTest,
+                       MAYBE_FramesForSitesInHistory) {
   if (content::AreAllSitesIsolatedForTesting())
     return;  // Top Document Isolation is disabled in this mode.