Disable ExtensionOverrideTest.OverrideNewtab, which is hangy

chrome/browser/extensions/extension_override_apitest.cc

 // Copyright (c) 2010 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 "chrome/browser/browser_list.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/extensions/extension_dom_ui.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 54 matching lines @@
     EXPECT_TRUE(tab->controller().GetActiveEntry()->url().
                 SchemeIs(chrome::kExtensionScheme));
 
     ASSERT_TRUE(catcher.GetNextResult());
   }
 
   // TODO(erikkay) Load a second extension with the same override.
   // Verify behavior, then unload the first and verify behavior, etc.
 }
 
-IN_PROC_BROWSER_TEST_F(ExtensionOverrideTest, OverrideNewtabIncognito) {
+#if defined(OS_MACOSX)
+// Hangy: http://crbug.com/70511
+#define MAYBE_OverrideNewtabIncognito DISABLED_OverrideNewtabIncognito
+#else
+#define MAYBE_OverrideNewtabIncognito OverrideNewtabIncognito
+#endif
+IN_PROC_BROWSER_TEST_F(ExtensionOverrideTest, MAYBE_OverrideNewtabIncognito) {
   ASSERT_TRUE(RunExtensionTest("override/newtab")) << message_;
 
   // Navigate an incognito tab to the new tab page.  We should get the actual
   // new tab page because we can't load chrome-extension URLs in incognito.
   ui_test_utils::OpenURLOffTheRecord(browser()->profile(),
                                      GURL("chrome://newtab/"));
   Browser* otr_browser = BrowserList::FindBrowserWithType(
       browser()->profile()->GetOffTheRecordProfile(), Browser::TYPE_NORMAL,
       false);
   TabContents* tab = otr_browser->GetSelectedTabContents();
@@ skipping 77 matching lines @@
   const ExtensionList *extensions =
       browser()->profile()->GetExtensionService()->extensions();
   UnloadExtension((*extensions->rbegin())->id());
   {
     ResultCatcher catcher;
     NavigateToKeyboard();
     ASSERT_TRUE(catcher.GetNextResult());
   }
 }
 #endif