Add skeletal CPMan manager component interfaces

Change-Id: Ica16e43849dd3bb0b90936a20ef4af477045b376
diff --git a/apps/cpman/api/src/main/java/org/onosproject/cpman/message/ControlMessageProviderService.java b/apps/cpman/api/src/main/java/org/onosproject/cpman/message/ControlMessageProviderService.java
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+++ b/apps/cpman/api/src/main/java/org/onosproject/cpman/message/ControlMessageProviderService.java
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2016 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.cpman.message;
+
+import org.onosproject.cpman.ControlMessage;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.provider.ProviderService;
+
+import java.util.Collection;
+
+/**
+ * Service through which control message providers can inject control message
+ * stats into the core.
+ */
+public interface ControlMessageProviderService
+        extends ProviderService<ControlMessageProvider> {
+
+    /**
+     * Used to notify the core about the control message statistic information.
+     *
+     * @param deviceId device identifier
+     * @param controlMessages a collection of control message stats
+     */
+    void updateStatsInfo(DeviceId deviceId, Collection<ControlMessage> controlMessages);
+}
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