Disable UnblockedPopupShowsInHistoryAndOmnibox on Linux

chrome/browser/ui/blocked_content/popup_blocker_browsertest.cc

 // Copyright 2013 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/command_line.h"
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 318 matching lines @@
       switches::kDisablePopupBlocking);
   GURL url(
       embedded_test_server()->GetURL("/popup_blocker/popup-on-unload.html"));
   ui_test_utils::NavigateToURL(browser(), url);
 
   NavigateAndCheckPopupShown(embedded_test_server()->GetURL("/popup_blocker/"),
                              ExpectPopup);
 }
 
 // Verify that when you unblock popup, the popup shows in history and omnibox.
+// TODO(crbug.com/663333) Flaky on Linux.
+#if defined(OS_LINUX)
+#define MAYBE_UnblockedPopupShowsInHistoryAndOmnibox \
+  DISABLED_UnblockedPopupShowsInHistoryAndOmnibox
+#else
+#define MAYBE_UnblockedPopupShowsInHistoryAndOmnibox \
+  UnblockedPopupShowsInHistoryAndOmnibox
+#endif
 IN_PROC_BROWSER_TEST_F(PopupBlockerBrowserTest,
-                       UnblockedPopupShowsInHistoryAndOmnibox) {
+                       MAYBE_UnblockedPopupShowsInHistoryAndOmnibox) {
   base::CommandLine::ForCurrentProcess()->AppendSwitch(
       switches::kDisablePopupBlocking);
   GURL url(embedded_test_server()->GetURL(
       "/popup_blocker/popup-blocked-to-post-blank.html"));
   NavigateAndCheckPopupShown(url, ExpectTab);
 
   std::string search_string =
       "data:text/html,<title>Popup Success!</title>you should not see this "
       "message if popup blocker is enabled";
 
@@ skipping 347 matching lines @@
 
   wait_for_new_tab.Wait();
 
   ASSERT_EQ(1u, chrome::GetBrowserCount(browser()->profile()));
   ASSERT_EQ(2, browser()->tab_strip_model()->count());
   // Check that we create the background tab.
   ASSERT_EQ(0, browser()->tab_strip_model()->active_index());
 }
 
 }  // namespace