Fix classes that have too many virtuals for inline constructors.

remoting/test/remote_connection_observer.h

Index: remoting/test/remote_connection_observer.h
diff --git a/remoting/test/remote_connection_observer.h b/remoting/test/remote_connection_observer.h
index 99da8be2fd51c760feb4685e2fc6b7727e643cb3..819d4151a20d1d898dd79ea5bfecee71a5b087e9 100644
--- a/remoting/test/remote_connection_observer.h
+++ b/remoting/test/remote_connection_observer.h
@@ -22,7 +22,6 @@ namespace test {
 // purposes only.
 class RemoteConnectionObserver {
  public:
-  RemoteConnectionObserver() {}
   virtual ~RemoteConnectionObserver() {}
 
   // Called when the connection state has changed.
@@ -47,6 +46,9 @@ class RemoteConnectionObserver {
   // Called when we have received an ExtensionMessage from the host.
   virtual void HostMessageReceived(const protocol::ExtensionMessage& message) {}
 
+ protected:
+  RemoteConnectionObserver() {}
+
  private:
   DISALLOW_COPY_AND_ASSIGN(RemoteConnectionObserver);
 };