[apps/graph] Wrap in namespace Graph

Change-Id: I08b37438f42749ff86e105770cd5aa566f84a237

apps/graph/values/values_parameter_controller.cpp

@@ -1,6 +1,8 @@
 #include "values_parameter_controller.h"
 #include <assert.h>
 
+namespace Graph {
+
 ValuesParameterController::ValuesParameterController(Responder * parentResponder) :
   ViewController(parentResponder),
   m_intervalStartCell(TableViewCell((char*)"X Debut")),
@@ -70,3 +72,5 @@ int ValuesParameterController::reusableCellCount() {
 KDCoordinate ValuesParameterController::cellHeight() {
   return 35;
 }
+
+}