Added Ash.SystemMenu.DefaultView.VisibleItems histogram.

ash/common/system/ime/tray_ime_chromeos.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/common/system/ime/tray_ime_chromeos.h"
 
 #include <vector>
 
 #include "ash/common/session/session_state_delegate.h"
 #include "ash/common/system/tray/hover_highlight_view.h"
@@ skipping 206 matching lines @@
   std::map<views::View*, std::string> property_map_;
   views::View* settings_;
   views::View* keyboard_status_;
 
   DISALLOW_COPY_AND_ASSIGN(IMEDetailedView);
 };
 
 }  // namespace tray
 
 TrayIME::TrayIME(SystemTray* system_tray)
-    : SystemTrayItem(system_tray),
+    : SystemTrayItem(system_tray, UMA_IME),
       tray_label_(NULL),
       default_(NULL),
       detailed_(NULL),
       keyboard_suppressed_(false),
       is_visible_(true) {
   SystemTrayNotifier* tray_notifier = WmShell::Get()->system_tray_notifier();
   tray_notifier->AddVirtualKeyboardObserver(this);
   tray_notifier->AddAccessibilityObserver(this);
   tray_notifier->AddIMEObserver(this);
 }
@@ skipping 126 matching lines @@
   else
     Update();
 }
 
 bool TrayIME::ShouldDefaultViewBeVisible() {
   return is_visible_ && (ime_list_.size() > 1 || property_list_.size() > 1 ||
                          ShouldShowKeyboardToggle());
 }
 
 }  // namespace ash