Deprecate Persistent functions which were marked to be deprecated.

samples/process.cc

Index: samples/process.cc
diff --git a/samples/process.cc b/samples/process.cc
index 844aee3d45fde306914dff0d4e8bf9173f4c3e52..e6f2ee3adddc222ae04aa155141969a16669eb77 100644
--- a/samples/process.cc
+++ b/samples/process.cc
@@ -291,9 +291,8 @@ JsHttpRequestProcessor::~JsHttpRequestProcessor() {
   // Dispose the persistent handles.  When noone else has any
   // references to the objects stored in the handles they will be
   // automatically reclaimed.
-  Isolate* isolate = GetIsolate();
-  context_.Dispose(isolate);
-  process_.Dispose(isolate);
+  context_.Dispose();
+  process_.Dispose();
 }