Disable flaky DevToolsBeforeUnloadTest.TestDevToolsOnDevTools on linux

chrome/browser/devtools/devtools_sanity_browsertest.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 "base/bind.h"
 #include "base/cancelable_callback.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/path_service.h"
@@ skipping 651 matching lines @@
   devtools_window->SetDockSideForTest(DEVTOOLS_DOCK_SIDE_UNDOCKED);
   content::WindowedNotificationObserver devtools_close_observer(
       content::NOTIFICATION_WEB_CONTENTS_DESTROYED,
       content::Source<content::WebContents>(
           devtools_window->web_contents()));
 
   OpenDevToolsPopupWindow(devtools_window);
   CloseDevToolsPopupWindow(devtools_window);
 }
 
-// FLaky on Windows bots: see crbug.com/323847
-#if defined(OS_WIN)
+// FLaky on Windows bots: see crbug.com/323847, Linux crbug.com/333554
+#if defined(OS_WIN) || defined(OS_LINUX)
 #define MAYBE_TestDevToolsOnDevTools DISABLED_TestDevToolsOnDevTools
 #else
 #define MAYBE_TestDevToolsOnDevTools TestDevToolsOnDevTools
 #endif
 // Tests that BeforeUnload event gets called on devtools that are opened
 // on another devtools.
 IN_PROC_BROWSER_TEST_F(DevToolsBeforeUnloadTest,
                        MAYBE_TestDevToolsOnDevTools) {
   ASSERT_TRUE(test_server()->Start());
   LoadTestPage(kDebuggerTestPage);
@@ skipping 310 matching lines @@
 #if defined(OS_WIN) && defined(USE_ASH)
   // Disable this test in Metro+Ash for now (http://crbug.com/262796).
   if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kAshBrowserTests))
     return;
 #endif
 
   ASSERT_TRUE(RunExtensionTest("target_list")) << message_;
 }
 
 }  // namespace