Disable NavigatingExtensionPopupBrowserTest.DownloadViaPost on Mac

chrome/browser/extensions/api/extension_action/browser_action_apitest.cc

 // Copyright (c) 2012 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/macros.h"
 #include "build/build_config.h"
 #include "chrome/browser/extensions/api/extension_action/extension_action_api.h"
 #include "chrome/browser/extensions/browser_action_test_util.h"
@@ skipping 974 matching lines @@
 //
 // Note - there is no "...ViaGet" flavour of this test, because we don't care
 // (yet) if GET succeeds with the download or not (it probably should succeed
 // for consistency with POST, but it always failed in M54 and before).  After
 // abandoing ShouldFork/OpenURL for all methods (not just for POST) [see comment
 // about https://crbug.com/646261 in ChromeContentRendererClient::ShouldFork]
 // GET should automagically start working for downloads.
 // TODO(lukasza): https://crbug.com/650694: Add a "Get" flavour of the test once
 // the download works both for GET and POST requests.
 
-// Disabled on Windows. See http://crbug.com/653856.
-#if defined(OS_WIN)
+// Disabled on Windows and Mac. See http://crbug.com/653856.
+#if defined(OS_WIN) || defined(OS_MACOSX)
 #define MAYBE_DownloadViaPost DISABLED_DownloadViaPost
 #else
 #define MAYBE_DownloadViaPost DownloadViaPost
 #endif
 
 IN_PROC_BROWSER_TEST_F(NavigatingExtensionPopupBrowserTest,
                        MAYBE_DownloadViaPost) {
   content::DownloadTestObserverTerminal downloads_observer(
       content::BrowserContext::GetDownloadManager(browser()->profile()),
       1,  // == wait_count (only waiting for "download-test3.gif").
@@ skipping 15 matching lines @@
   // The test verification below is applicable only to scenarios where the
   // download shelf is supported - on ChromeOS, instead of the download shelf,
   // there is a download notification in the right-bottom corner of the screen.
 #if !defined(OS_CHROMEOS)
   EXPECT_TRUE(browser()->window()->IsDownloadShelfVisible());
 #endif
 }
 
 }  // namespace
 }  // namespace extensions