Measure bandwidth for chromoting video channel

remoting/client/plugin/chromoting_instance.h

Index: remoting/client/plugin/chromoting_instance.h
diff --git a/remoting/client/plugin/chromoting_instance.h b/remoting/client/plugin/chromoting_instance.h
index f552777b9d93c7509fac7b9610d513b2419cde6c..44acbf49bb2efa7341823de1dac7f3d86f3ef70c 100644
--- a/remoting/client/plugin/chromoting_instance.h
+++ b/remoting/client/plugin/chromoting_instance.h
@@ -39,6 +39,7 @@ class ConnectionToHost;
 }  // namespace protocol
 
 class ChromotingClient;
+class ChromotingStats;
 class ClientContext;
 class InputHandler;
 class JingleThread;
@@ -78,6 +79,9 @@ class ChromotingInstance : public pp::Instance {
 
   void LogDebugInfo(const std::string& info);
 
+  // Return statistics record by ChromotingClient.
+  ChromotingStats* GetStats();
+
  private:
   FRIEND_TEST_ALL_PREFIXES(ChromotingInstanceTest, TestCaseSetup);