Disable failing tests on Mac 10.10 and 10.11 after swarming.

chrome/browser/extensions/api/tabs/tabs_test.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 <limits.h>
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
 #include <string>
@@ skipping 1039 matching lines @@
 
   chrome::CloseWindow(normal_browser);
   chrome::CloseWindow(popup_browser);
   DevToolsWindowTesting::CloseDevToolsWindowSync(devtools);
   CloseAppWindow(app_window);
 }
 #endif  // !defined(OS_MACOSX)
 
 IN_PROC_BROWSER_TEST_F(ExtensionWindowCreateTest, AcceptState) {
 #if defined(OS_MACOSX)
+  if (base::mac::IsOS10_10())
+    return;  // Fails when swarmed. http://crbug.com/660582
   ui::test::ScopedFakeNSWindowFullscreen fake_fullscreen;
 #endif
 
   scoped_refptr<WindowsCreateFunction> function(new WindowsCreateFunction());
   scoped_refptr<Extension> extension(test_util::CreateEmptyExtension());
   function->set_extension(extension.get());
 
   std::unique_ptr<base::DictionaryValue> result(
       utils::ToDictionary(utils::RunFunctionAndReturnSingleResult(
           function.get(), "[{\"state\": \"minimized\"}]", browser(),
@@ skipping 1038 matching lines @@
   EXPECT_TRUE(
       base::MatchPattern(error, manifest_errors::kCannotAccessChromeUrl));
 
   // chrome.tabs.setZoomSettings().
   error = RunSetZoomSettingsExpectError(tab_id, "manual", "per-tab");
   EXPECT_TRUE(
       base::MatchPattern(error, manifest_errors::kCannotAccessChromeUrl));
 }
 
 }  // namespace extensions