Revert of chromeos: Remove some IME methods from ash::SystemTrayDelegate

chrome/browser/chromeos/input_method/input_method_switch_recorder.h

Index: chrome/browser/chromeos/input_method/input_method_switch_recorder.h
diff --git a/chrome/browser/chromeos/input_method/input_method_switch_recorder.h b/chrome/browser/chromeos/input_method/input_method_switch_recorder.h
new file mode 100644
index 0000000000000000000000000000000000000000..e53a2886a9d014fdb3fecd96d5eccdd166d5022e
--- /dev/null
+++ b/chrome/browser/chromeos/input_method/input_method_switch_recorder.h
@@ -0,0 +1,25 @@
+// Copyright (c) 2014 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.
+
+#ifndef CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_SWITCH_RECORDER_H_
+#define CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_SWITCH_RECORDER_H_
+
+namespace chromeos {
+namespace input_method {
+
+// A class for recording UMA logs for IME switches.
+class InputMethodSwitchRecorder {
+ public:
+  InputMethodSwitchRecorder();
+  ~InputMethodSwitchRecorder();
+
+  static InputMethodSwitchRecorder* Get();
+  void RecordSwitch(bool by_tray_menu);
+};
+
+}  // namespace input_method
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_INPUT_METHOD_INPUT_METHOD_SWITCH_RECORDER_H_
+