Chromoting: Synchronize connected/disconnected state between Java/C++

remoting/client/jni/chromoting_jni_runtime.h

 // Copyright 2013 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_CLIENT_JNI_CHROMOTING_JNI_RUNTIME_H_
 #define REMOTING_CLIENT_JNI_CHROMOTING_JNI_RUNTIME_H_
 
 #include <jni.h>
 #include <string>
 
@@ skipping 45 matching lines @@
                      const char* host_jid,
                      const char* host_id,
                      const char* host_pubkey,
                      const char* pairing_id,
                      const char* pairing_secret);
 
   // Terminates any ongoing connection attempt and cleans up by nullifying
   // |session_|. This is a no-op unless |session| is currently non-null.
   void DisconnectFromHost();
 
-  // Returns the client for the currently-active session. Do not call if
-  // |session| is null.
+  // Returns the client for the currently-active session.
   scoped_refptr<ChromotingJniInstance> session() {
-    DCHECK(session_);
     return session_;
   }
 
   // Notifies the user of the current connection status. Call on UI thread.
   void ReportConnectionStatus(protocol::ConnectionToHost::State state,
                               protocol::ErrorCode error);
 
   // Pops up a dialog box asking the user to enter a PIN. Call on UI thread.
   void DisplayAuthenticationPrompt(bool pairing_supported);
 
@@ skipping 53 matching lines @@
   scoped_refptr<ChromotingJniInstance> session_;
 
   friend struct DefaultSingletonTraits<ChromotingJniRuntime>;
 
   DISALLOW_COPY_AND_ASSIGN(ChromotingJniRuntime);
 };
 
 }  // namespace remoting
 
 #endif