Chromecast: adds class to help record complex histograms.

chromecast/base/metrics/cast_metrics_test_helper.h

Index: chromecast/base/metrics/cast_metrics_test_helper.h
diff --git a/chromecast/base/metrics/cast_metrics_test_helper.h b/chromecast/base/metrics/cast_metrics_test_helper.h
new file mode 100644
index 0000000000000000000000000000000000000000..a1eafed29cd21eee17ea5da7486149d62ebe50aa
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+++ b/chromecast/base/metrics/cast_metrics_test_helper.h
@@ -0,0 +1,19 @@
+// Copyright 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 CHROMECAST_BASE_METRICS_CAST_METRICS_TEST_HELPER_H_
+#define CHROMECAST_BASE_METRICS_CAST_METRICS_TEST_HELPER_H_
+
+namespace chromecast {
+namespace metrics {
+
+// Creates and initializes a metrics helper stub for the current process, in
+// which all operations are no-ops. May be safely called multiple times per
+// process.
+void InitializeMetricsHelperForTesting();
+
+}  // namespace metrics
+}  // namespace chromecast
+
+#endif  // CHROMECAST_BASE_METRICS_CAST_METRICS_TEST_HELPER_H_