Disable TabCaptureApiTest.MaxOffscreenTabs on Mac on ASAN due to flakiness.

chrome/browser/extensions/api/tab_capture/tab_capture_apitest.cc

Index: chrome/browser/extensions/api/tab_capture/tab_capture_apitest.cc
diff --git a/chrome/browser/extensions/api/tab_capture/tab_capture_apitest.cc b/chrome/browser/extensions/api/tab_capture/tab_capture_apitest.cc
index ffd167bf2e23c3cf33f7f8e52c8f1aff678af512..e43687e414708934bb2223a9272a822a59fe901a 100644
--- a/chrome/browser/extensions/api/tab_capture/tab_capture_apitest.cc
+++ b/chrome/browser/extensions/api/tab_capture/tab_capture_apitest.cc
@@ -166,9 +166,15 @@ IN_PROC_BROWSER_TEST_F(TabCaptureApiTest, ApiTests) {
   ASSERT_TRUE(RunExtensionSubtest("tab_capture", "api_tests.html")) << message_;
 }
 
+#if defined(OS_MACOSX) && defined(ADDRESS_SANITIZER)
+// Flaky on ASAN on Mac. See https://crbug.com/674497.
+#define MAYBE_MaxOffscreenTabs DISABLED_MaxOffscreenTabs
+#else
+#define MAYBE_MaxOffscreenTabs MaxOffscreenTabs
+#endif
 // Tests that there is a maximum limitation to the number of simultaneous
 // off-screen tabs.
-IN_PROC_BROWSER_TEST_F(TabCaptureApiTest, MaxOffscreenTabs) {
+IN_PROC_BROWSER_TEST_F(TabCaptureApiTest, MAYBE_MaxOffscreenTabs) {
   AddExtensionToCommandLineWhitelist();
   ASSERT_TRUE(RunExtensionSubtest("tab_capture", "max_offscreen_tabs.html"))
       << message_;