Experimental 'purging and suspending' backgrounded tabs behind the flag

chrome/browser/memory/tab_manager_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/base_switches.h"
 #include "base/command_line.h"
 #include "base/memory/memory_pressure_listener.h"
 #include "base/test/simple_test_tick_clock.h"
 #include "build/build_config.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/media/media_capture_devices_dispatcher.h"
 #include "chrome/browser/media/media_stream_capture_indicator.h"
 #include "chrome/browser/memory/tab_manager.h"
 #include "chrome/browser/memory/tab_manager_web_contents_data.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_commands.h"
 #include "chrome/browser/ui/find_bar/find_bar_controller.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/common/chrome_features.h"
+#include "chrome/common/chrome_switches.h"

[Georges Khalil, 2016/05/11 15:01:23]

nit: remove this.

[hajimehoshi, 2016/05/12 08:33:18]

Done.

 #include "chrome/common/url_constants.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "chrome/test/base/interactive_test_utils.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/test/test_utils.h"
 #include "url/gurl.h"
 
 using content::OpenURLParams;
@@ skipping 358 matching lines @@
 
   // Remove the video stream.
   video_stream_ui.reset();
 
   // Should be able to discard the background tab now.
   EXPECT_TRUE(tab_manager->DiscardTabImpl());
 }
 
 }  // namespace memory
 
-#endif  // OS_WIN || OS_CHROMEOS
+#endif  // OS_WIN || OS_MAXOSX || OS_LINUX