Disable DownloadExtensionTest_Download_InvalidURLs on Mac

chrome/browser/extensions/api/downloads/downloads_api_browsertest.cc

Index: chrome/browser/extensions/api/downloads/downloads_api_browsertest.cc
diff --git a/chrome/browser/extensions/api/downloads/downloads_api_browsertest.cc b/chrome/browser/extensions/api/downloads/downloads_api_browsertest.cc
index a08acf422c98078a3832c586dd4630946622e950..2cbefc67b4a054166465166cf3ae52b3a1a0e6bb 100644
--- a/chrome/browser/extensions/api/downloads/downloads_api_browsertest.cc
+++ b/chrome/browser/extensions/api/downloads/downloads_api_browsertest.cc
@@ -1680,9 +1680,18 @@ IN_PROC_BROWSER_TEST_F(DownloadExtensionTest,
       download_url.c_str())).c_str());
 }
 
+// flaky on mac: crbug.com/392288
+#if defined(OS_MACOSX)
+#define MAYBE_DownloadExtensionTest_Download_InvalidURLs \
+        DISABLED_DownloadExtensionTest_Download_InvalidURLs
+#else
+#define MAYBE_DownloadExtensionTest_Download_InvalidURLs \
+        DownloadExtensionTest_Download_InvalidURLs
+#endif
+
 // Test that downloading invalid URLs immediately returns kInvalidURLError.
 IN_PROC_BROWSER_TEST_F(DownloadExtensionTest,
-                       DownloadExtensionTest_Download_InvalidURLs) {
+                       MAYBE_DownloadExtensionTest_Download_InvalidURLs) {
   LoadExtension("downloads_split");
   GoOnTheRecord();