Disable BlockWebContentsCreationIncognito test on ASAN on Mac.

chrome/browser/ui/blocked_content/popup_blocker_browsertest.cc

 // Copyright 2013 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 <stdint.h>
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 232 matching lines @@
 
 IN_PROC_BROWSER_TEST_F(PopupBlockerBrowserTest,
                        BlockWebContentsCreation) {
   RunCheckTest(
       browser(),
       "/popup_blocker/popup-blocked-to-post-blank.html",
       ExpectTab,
       DontCheckTitle);
 }
 
+#if defined(OS_MACOSX) && defined(ADDRESS_SANITIZER)
+// Flaky on ASAN on Mac. See https://crbug.com/674497.
+#define MAYBE_BlockWebContentsCreationIncognito \
+  DISABLED_BlockWebContentsCreationIncognito
+#else
+#define MAYBE_BlockWebContentsCreationIncognito \
+  BlockWebContentsCreationIncognito
+#endif
 IN_PROC_BROWSER_TEST_F(PopupBlockerBrowserTest,
-                       BlockWebContentsCreationIncognito) {
+                       MAYBE_BlockWebContentsCreationIncognito) {
   RunCheckTest(
       CreateIncognitoBrowser(),
       "/popup_blocker/popup-blocked-to-post-blank.html",
       ExpectTab,
       DontCheckTitle);
 }
 
 IN_PROC_BROWSER_TEST_F(PopupBlockerBrowserTest,
                        PopupBlockedFakeClickOnAnchor) {
   RunCheckTest(
@@ skipping 444 matching lines @@
 
   wait_for_new_tab.Wait();
 
   ASSERT_EQ(1u, chrome::GetBrowserCount(browser()->profile()));
   ASSERT_EQ(2, browser()->tab_strip_model()->count());
   // Check that we create the background tab.
   ASSERT_EQ(0, browser()->tab_strip_model()->active_index());
 }
 
 }  // namespace