[Chromoting.com] Make Android telemetry report host version/os/os version

remoting/base/chromoting_event.h

Index: remoting/base/chromoting_event.h
diff --git a/remoting/base/chromoting_event.h b/remoting/base/chromoting_event.h
index 3e7a9591b8512d0e4ab48c42576656a52d4b71c0..e26fc47a4b3a9402681f7f2cc7de42db9fc43f7d 100644
--- a/remoting/base/chromoting_event.h
+++ b/remoting/base/chromoting_event.h
@@ -92,6 +92,9 @@ class ChromotingEvent {
   static const char kCpuKey[];
   static const char kDecodeLatencyKey[];
   static const char kEncodeLatencyKey[];
+  static const char kHostOsKey[];
+  static const char kHostOsVersionKey[];
+  static const char kHostVersionKey[];
   static const char kMaxCaptureLatencyKey[];
   static const char kMaxDecodeLatencyKey[];
   static const char kMaxEncodeLatencyKey[];
@@ -142,6 +145,9 @@ class ChromotingEvent {
   // Returns true if the SessionState concludes the end of session.
   static bool IsEndOfSession(SessionState state);
 
+  // Converts the OS type String into the enum value.
+  static Os ParseOsFromString(const std::string& os);
+
  private:
   std::unique_ptr<base::DictionaryValue> values_map_;