Chromecast: adds CastMetricsHelper API from Java.

chromecast/android/cast_metrics_helper_android.h

+// 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 CHROMECAST_ANDROID_CAST_METRICS_HELPER_ANDROID_H_
+#define CHROMECAST_ANDROID_CAST_METRICS_HELPER_ANDROID_H_
+
+#include <jni.h>
+#include <vector>
+
+#include "base/macros.h"
+
+namespace chromecast {
+
+class CastMetricsHelperAndroid {
+ public:
+  // Registers the JNI methods for CastMetricsHelperAndroid.
+  static bool RegisterJni(JNIEnv* env);
+
+ private:
+  DISALLOW_IMPLICIT_CONSTRUCTORS(CastMetricsHelperAndroid);
+};
+
+}  // namespace chromecast
+
+#endif  // CHROMECAST_ANDROID_CAST_METRICS_HELPER_ANDROID_H_