GCM: Add Android UMA, and UMA for deleted/collapsed messages

components/gcm_driver/gcm_client_impl.h

 // 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 COMPONENTS_GCM_DRIVER_GCM_CLIENT_IMPL_H_
 #define COMPONENTS_GCM_DRIVER_GCM_CLIENT_IMPL_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 282 matching lines @@
   void HandleIncomingMessage(const gcm::MCSMessage& message);
 
   // Fires OnMessageReceived event on the delegate of this class, based on the
   // details in |data_message_stanza| and |message_data|.
   void HandleIncomingDataMessage(
       const std::string& app_id,
       bool was_subtype,
       const mcs_proto::DataMessageStanza& data_message_stanza,
       MessageData& message_data);
 
+  // Fires OnMessagesDeleted event on the delegate of this class, based on the
+  // details in |data_message_stanza| and |message_data|.
+  void HandleIncomingDeletedMessages(
+      const std::string& app_id,
+      const mcs_proto::DataMessageStanza& data_message_stanza,
+      MessageData& message_data);
+
   // Fires OnMessageSendError event on the delegate of this class, based on the
   // details in |data_message_stanza| and |message_data|.
   void HandleIncomingSendError(
       const std::string& app_id,
       const mcs_proto::DataMessageStanza& data_message_stanza,
       MessageData& message_data);
 
   // Is there any standalone app being registered for GCM?
   bool HasStandaloneRegisteredApp() const;
 
@@ skipping 81 matching lines @@
 
   // Factory for creating references in callbacks.
   base::WeakPtrFactory<GCMClientImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GCMClientImpl);
 };
 
 }  // namespace gcm
 
 #endif  // COMPONENTS_GCM_DRIVER_GCM_CLIENT_IMPL_H_