Log UMA metrics for multiprofile actions.

ash/multi_profile_uma.h

Index: ash/multi_profile_uma.h
diff --git a/ash/multi_profile_uma.h b/ash/multi_profile_uma.h
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+++ b/ash/multi_profile_uma.h
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+// Copyright 2013 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 ASH_MULTI_PROFILE_UMA_H_
+#define ASH_MULTI_PROFILE_UMA_H_
+
+#include "ash/ash_export.h"
+#include "base/basictypes.h"
+
+namespace ash {
+
+// Records UMA statistics for multiprofile actions.
+// Note: There is also an action to switch profile windows from the
+// browser frame that is recorded by the "Profile.OpenMethod" metric.
+class ASH_EXPORT MultiProfileUMA {
+ public:
+  static void RecordSwitchUserFromTray();
+  static void RecordSwitchUserFromAccelerator();
+  static void RecordSigninUserFromTray();
+  static void RecordSigninUserFromBrowserFrame();

[Ilya Sherman, 2013/09/28 00:29:35]

nit: Please document these methods.

[Tim Song, 2013/09/28 01:35:13]

Done.

+
+ private:
+  MultiProfileUMA();
+  ~MultiProfileUMA();
+
+  DISALLOW_COPY_AND_ASSIGN(MultiProfileUMA);
+};
+
+}  // namespace ash
+
+#endif  // ASH_MULTI_PROFILE_UMA_H_