[Remoting Android] Log app version for telemetry

remoting/base/chromoting_event.h

 // Copyright 2016 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 REMOTING_BASE_CHROMOTING_EVENT_H_
 #define REMOTING_BASE_CHROMOTING_EVENT_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 69 matching lines @@
     CONNECTION_STATISTICS = 2,
     SESSION_ID_OLD = 3,
     SESSION_ID_NEW = 4,
     HEARTBEAT = 5,
     HEARTBEAT_REJECTED = 6,
     RESTART = 7,
     HOST_STATUS = 8,
     SIGNAL_STRATEGY_PROGRESS = 9
   };
 
+  static const char kWebAppVersionKey[];
   static const char kCaptureLatencyKey[];
   static const char kConnectionErrorKey[];
   static const char kCpuKey[];
   static const char kDecodeLatencyKey[];
   static const char kEncodeLatencyKey[];
   static const char kMaxCaptureLatencyKey[];
   static const char kMaxDecodeLatencyKey[];
   static const char kMaxEncodeLatencyKey[];
   static const char kMaxRenderLatencyKey[];
   static const char kMaxRoundtripLatencyKey[];
@@ skipping 43 matching lines @@
 
  private:
   std::unique_ptr<base::DictionaryValue> values_map_;
 
   int send_attempts_ = 0;
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_BASE_CHROMOTING_EVENT_H_