Create ash memory monitor

ash/system/tray/system_tray.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 "ash/system/tray/system_tray.h"
 
+#include "ash/ash_switches.h"
 #include "ash/shell.h"
 #include "ash/shell/panel_window.h"
 #include "ash/shell_window_ids.h"
 #include "ash/system/audio/tray_volume.h"
 #include "ash/system/bluetooth/tray_bluetooth.h"
 #include "ash/system/brightness/tray_brightness.h"
 #include "ash/system/chromeos/tray_display.h"
 #include "ash/system/date/tray_date.h"
 #include "ash/system/drive/tray_drive.h"
 #include "ash/system/ime/tray_ime.h"
 #include "ash/system/locale/tray_locale.h"
+#include "ash/system/monitor/tray_monitor.h"
 #include "ash/system/power/power_status_observer.h"
 #include "ash/system/power/power_supply_status.h"
 #include "ash/system/power/tray_power.h"
 #include "ash/system/settings/tray_settings.h"
 #include "ash/system/status_area_widget.h"
 #include "ash/system/tray/system_tray_delegate.h"
 #include "ash/system/tray/system_tray_item.h"
 #include "ash/system/tray/tray_bubble_wrapper.h"
 #include "ash/system/tray/tray_constants.h"
 #include "ash/system/tray_accessibility.h"
 #include "ash/system/tray_caps_lock.h"
 #include "ash/system/tray_update.h"
 #include "ash/system/user/login_status.h"
 #include "ash/system/user/tray_user.h"
 #include "ash/wm/shelf_layout_manager.h"
+#include "base/command_line.h"
 #include "base/logging.h"
 #include "base/timer.h"
 #include "base/utf_string_conversions.h"
 #include "grit/ash_strings.h"
 #include "ui/aura/root_window.h"
 #include "ui/base/events/event_constants.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/compositor/layer.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/screen.h"
@@ skipping 146 matching lines @@
 #if defined(OS_CHROMEOS)
   AddTrayItem(tray_display);
 #endif
   AddTrayItem(tray_volume);
   AddTrayItem(tray_brightness);
   AddTrayItem(tray_update);
   AddTrayItem(tray_accessibility);
   AddTrayItem(tray_caps_lock);
   AddTrayItem(tray_settings);
   AddTrayItem(tray_date);
+
+#if defined(OS_LINUX)
+  // Add memory monitor if enabled.
+  CommandLine* cmd = CommandLine::ForCurrentProcess();
+  if (cmd->HasSwitch(ash::switches::kAshEnableMemoryMonitor))
+    AddTrayItem(new internal::TrayMonitor);
+#endif
+
   SetVisible(ash::Shell::GetInstance()->tray_delegate()->
       GetTrayVisibilityOnStartup());
 }
 
 void SystemTray::AddTrayItem(SystemTrayItem* item) {
   items_.push_back(item);
 
   SystemTrayDelegate* delegate = Shell::GetInstance()->tray_delegate();
   views::View* tray_item = item->CreateTrayView(delegate->GetUserLoginStatus());
   item->UpdateAfterShelfAlignmentChange(shelf_alignment());
@@ skipping 373 matching lines @@
         ConvertPointToWidget(this, &point);
         arrow_offset = point.x();
       }
     }
     ShowDefaultViewWithOffset(BUBBLE_CREATE_NEW, arrow_offset);
   }
   return true;
 }
 
 }  // namespace ash