Clean-up inline members of nested classes (remoting/)

remoting/jingle_glue/signal_strategy.h

Index: remoting/jingle_glue/signal_strategy.h
diff --git a/remoting/jingle_glue/signal_strategy.h b/remoting/jingle_glue/signal_strategy.h
index 065127224180dd823fb61aa58d5b81e66ff0dc6a..206edc0dec09bc7e400313ec2fecbfbf472b22dd 100644
--- a/remoting/jingle_glue/signal_strategy.h
+++ b/remoting/jingle_glue/signal_strategy.h
@@ -46,13 +46,13 @@ class SignalStrategy {
     // Called after state of the connection has changed. If the state
     // is DISCONNECTED, then GetError() can be used to get the reason
     // for the disconnection.
-    virtual void OnSignalStrategyStateChange(State state) {}
+    virtual void OnSignalStrategyStateChange(State state) = 0;
 
     // Must return true if the stanza was handled, false
     // otherwise. The signal strategy must not be deleted from a
     // handler of this message.
     virtual bool OnSignalStrategyIncomingStanza(
-        const buzz::XmlElement* stanza) { return false; }
+        const buzz::XmlElement* stanza) = 0;
   };
 
   SignalStrategy() {}