Changed when the UMA metric Ash.NumberOfVisibleWindowsInPrimaryDisplay is recorded.

ash/test/user_metrics_recorder_test_api.h

Index: ash/test/user_metrics_recorder_test_api.h
diff --git a/ash/test/user_metrics_recorder_test_api.h b/ash/test/user_metrics_recorder_test_api.h
new file mode 100644
index 0000000000000000000000000000000000000000..e52ef0b5acd3fe5662476ca0b5318e7aa3885821
--- /dev/null
+++ b/ash/test/user_metrics_recorder_test_api.h
@@ -0,0 +1,37 @@
+// Copyright 2015 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_TEST_USER_METRICS_RECORDER_TEST_API_H_
+#define ASH_TEST_USER_METRICS_RECORDER_TEST_API_H_
+
+#include "ash/metrics/user_metrics_recorder.h"
+#include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
+
+namespace ash {
+namespace test {
+
+// Test API to access internals of the UserMetricsRecorder class.
+class UserMetricsRecorderTestAPI {
+ public:
+  UserMetricsRecorderTestAPI();
+  ~UserMetricsRecorderTestAPI();
+
+  // Accessor to UserMetricsRecorder::RecordPeriodicMetrics().
+  void RecordPeriodicMetrics();
+
+  // Accessor to UserMetricsRecorder::IsUserInActiveDesktopEnvironment().
+  bool IsUserInActiveDesktopEnvironment() const;
+
+ private:
+  // The UserMetricsRecorder that |this| is providing internal access to.
+  UserMetricsRecorder user_metrics_recorder_;
+
+  DISALLOW_COPY_AND_ASSIGN(UserMetricsRecorderTestAPI);
+};
+
+}  // namespace test
+}  // namespace ash
+
+#endif  // ASH_TEST_USER_METRICS_RECORDER_TEST_API_H_