Add sender verification of D-Bus signals.

dbus/test_service.h

Index: dbus/test_service.h
diff --git a/dbus/test_service.h b/dbus/test_service.h
index 871aed6a485d7b015251a225caa075ae73a875ff..17f27ca133aa01c3700425748889d0b5892594fc 100644
--- a/dbus/test_service.h
+++ b/dbus/test_service.h
@@ -65,6 +65,9 @@ class TestService : public base::Thread {
   // This function emulates dbus-send's behavior.
   void SendTestSignalFromRoot(const std::string& message);
 
+  // Request the ownership of a well-known name "TestService".
+  void RequestOwnership();
+
  private:
   // Helper function for SendTestSignal().
   void SendTestSignalInternal(const std::string& message);
@@ -127,6 +130,9 @@ class TestService : public base::Thread {
   // Helper function for SendPropertyChangedSignal().
   void SendPropertyChangedSignalInternal(const std::string& name);
 
+  // Helper function for RequestOwnership().
+  void RequestOwnershipInternal();
+
   scoped_refptr<base::MessageLoopProxy> dbus_thread_message_loop_proxy_;
   base::WaitableEvent on_all_methods_exported_;
   // The number of methods actually exported.