Adds CastMetricsServiceClient to Chromecast shell.

chromecast/metrics/platform_metrics_providers.h

Index: chromecast/metrics/platform_metrics_providers.h
diff --git a/chromecast/metrics/platform_metrics_providers.h b/chromecast/metrics/platform_metrics_providers.h
new file mode 100644
index 0000000000000000000000000000000000000000..d656b39f891c60bafe2d6a8879ee6a88e4ce137c
--- /dev/null
+++ b/chromecast/metrics/platform_metrics_providers.h
@@ -0,0 +1,36 @@
+// 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_METRICS_PLATFORM_METRICS_PROVIDERS_H_
+#define CHROMECAST_METRICS_PLATFORM_METRICS_PROVIDERS_H_
+
+#include "components/metrics/proto/system_profile.pb.h"
+
+class MetricsService;
+
+namespace chromecast {
+namespace metrics {
+
+// Build-level hook for different platforms to provide data to MetricsService.
+void RegisterPlatformMetricsProviders(MetricsService* metrics_service);
+
+// Returns the current release channel.
+::metrics::SystemProfileProto::Channel GetPlatformReleaseChannel();
+
+// Returns a string representing this build's version.
+std::string GetPlatformVersionString();
+
+// Returns whether or not metrics reporting should be on.
+bool PlatformIsReportingEnabled();
+
+// Called when the UMA client ID has been set.
+void PlatformSetClientID(const std::string& client_id);
+
+// Called when an upload has completed.
+void PlatformOnLogUploadComplete();
+
+}  // namespace metrics
+}  // namespace chromecast
+
+#endif  // CHROMECAST_METRICS_PLATFORM_METRICS_PROVIDERS_H_