Merge pull request #9028 from alalek:dnn_experimental_namespace

modules/dnn/src/init.cpp

@@ -42,10 +42,9 @@
 #include "precomp.hpp"
 #include <opencv2/dnn/layer.details.hpp>
 
-namespace cv
-{
-namespace dnn
-{
+namespace cv {
+namespace dnn {
+CV__DNN_EXPERIMENTAL_NS_BEGIN
 
 static Mutex* __initialization_mutex = NULL;
 Mutex& getInitializationMutex()
@@ -100,4 +99,5 @@ void initializeLayerFactory()
     CV_DNN_REGISTER_LAYER_CLASS(Scale,          ScaleLayer);
 }
 
-}} //namespace
+CV__DNN_EXPERIMENTAL_NS_END
+}} // namespace