Disable TopDocumentIsolationTest.FramesForSitesInHistory on Mac

content/browser/top_document_isolation_browsertest.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <string>
 
 #include "base/command_line.h"
 #include "content/browser/frame_host/frame_tree_node.h"
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/public/common/content_switches.h"
@@ skipping 363 matching lines @@
   EXPECT_EQ(
       " Site D\n"
       "Where D = http://d.com/",
       DepictFrameTree(popup_root));
   EXPECT_EQ(
       " Site D\n"
       "Where D = http://d.com/",
       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.
 
   // First, do a series of navigations.
   GURL a_url = embedded_test_server()->GetURL(
       "a.com", "/cross_site_iframe_factory.html?a");
   GURL b_url = embedded_test_server()->GetURL(
       "b.com", "/cross_site_iframe_factory.html?b");
   GURL c_url = embedded_test_server()->GetURL(
       "c.com", "/cross_site_iframe_factory.html?c");
@@ skipping 167 matching lines @@
       "      C = http://adnetwork.com/",
       DepictFrameTree(root()));
   EXPECT_EQ(
       " Site C ------------ proxies for B\n"
       "Where B = default subframe process\n"
       "      C = http://adnetwork.com/",
       DepictFrameTree(popup_root));
 }
 
 }  // namespace content