Cope gracefully with scripts querying stats before client has started.

remoting/client/plugin/chromoting_instance.h

 // Copyright (c) 2011 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.
 
 // TODO(ajwong): We need to come up with a better description of the
 // responsibilities for each thread.
 
 #ifndef REMOTING_CLIENT_PLUGIN_CHROMOTING_INSTANCE_H_
 #define REMOTING_CLIENT_PLUGIN_CHROMOTING_INSTANCE_H_
 
@@ skipping 69 matching lines @@
   // Called by ChromotingScriptableObject to provide username and password.
   void SubmitLoginInfo(const std::string& username,
                        const std::string& password);
 
   // Called by ChromotingScriptableObject to set scale-to-fit.
   void SetScaleToFit(bool scale_to_fit);
 
   void LogDebugInfo(const std::string& info);
 
   // Return statistics record by ChromotingClient.
+  // If no connection is currently active then NULL will be returned.
   ChromotingStats* GetStats();
 
  private:
   FRIEND_TEST_ALL_PREFIXES(ChromotingInstanceTest, TestCaseSetup);
 
   bool initialized_;
 
   ClientContext context_;
   scoped_ptr<protocol::ConnectionToHost> host_connection_;
   scoped_ptr<PepperView> view_;
@@ skipping 19 matching lines @@
   // JavaScript interface to control this instance.
   // This wraps a ChromotingScriptableObject in a pp::Var.
   pp::Var instance_object_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromotingInstance);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_CLIENT_PLUGIN_CHROMOTING_INSTANCE_H_