Adding the base ChromotingInstance implementation and unittests. This class will be used by the ap…

remoting/protocol/connection_to_host.h

Index: remoting/protocol/connection_to_host.h
diff --git a/remoting/protocol/connection_to_host.h b/remoting/protocol/connection_to_host.h
index 605bea38ac14d638531f0acdd322970e1828922d..802356842394f47c505788782f3fedcc45034582 100644
--- a/remoting/protocol/connection_to_host.h
+++ b/remoting/protocol/connection_to_host.h
@@ -29,6 +29,10 @@ namespace remoting {
 class XmppProxy;
 class VideoPacket;
 
+namespace test {
+class FakeConnectionToHost;
+}
+
 namespace protocol {
 
 class AudioReader;
@@ -147,6 +151,8 @@ class ConnectionToHost : public SignalStrategy::Listener,
   State state() const;
 
  private:
+  friend remoting::test::FakeConnectionToHost;
+
   void NotifyIfChannelsReady();
 
   void CloseOnError(ErrorCode error);