use SimpleReferenceObject in fpicker module

to replace hand-rolled version

Change-Id: I0c1cbf6b0e70106f4ecc5b579e09acc17045a44e

fpicker/Library_fps_office.mk

@@ -25,6 +25,7 @@ $(eval $(call gb_Library_use_libraries,fps_office,\
 	cppu \
 	cppuhelper \
 	sal \
+	salhelper \
 	svl \
 	svt \
 	tk \

fpicker/source/office/asyncfilepicker.cxx

@@ -29,8 +29,7 @@
 namespace svt
 {
     AsyncPickerAction::AsyncPickerAction( SvtFileDialog* _pDialog, SvtFileView* _pView, const Action _eAction )
-        :m_refCount ( 0        )
-        ,m_eAction  ( _eAction )
+        :m_eAction  ( _eAction )
         ,m_pView    ( _pView   )
         ,m_pDialog  ( _pDialog )
         ,m_bRunning ( false    )
@@ -45,23 +44,6 @@ namespace svt
     }
 
 
-    oslInterlockedCount SAL_CALL AsyncPickerAction::acquire()
-    {
-        return osl_atomic_increment( &m_refCount );
-    }
-
-
-    oslInterlockedCount SAL_CALL AsyncPickerAction::release()
-    {
-        if ( 0 == osl_atomic_decrement( &m_refCount ) )
-        {
-            delete this;
-            return 0;
-        }
-        return m_refCount;
-    }
-
-
     void AsyncPickerAction::cancel()
     {
         DBG_TESTSOLARMUTEX();

fpicker/source/office/asyncfilepicker.hxx

@@ -24,6 +24,7 @@
 #include <rtl/ref.hxx>
 #include <rtl/ustring.hxx>
 #include <com/sun/star/uno/Sequence.h>
+#include <salhelper/simplereferenceobject.hxx>
 
 class SvtFileView;
 class SvtFileDialog;
@@ -39,7 +40,7 @@ namespace svt
 
     //= AsyncPickerAction
 
-    class AsyncPickerAction : public ::rtl::IReference
+    class AsyncPickerAction : public salhelper::SimpleReferenceObject
     {
     public:
         enum Action
@@ -50,7 +51,6 @@ namespace svt
         };
 
     private:
-        mutable oslInterlockedCount m_refCount;
         Action                      m_eAction;
         SvtFileView*                m_pView;
         SvtFileDialog*              m_pDialog;
@@ -83,10 +83,6 @@ namespace svt
         /// cancels the running action
         void cancel();
 
-        // IReference overridables
-        virtual oslInterlockedCount SAL_CALL acquire() SAL_OVERRIDE;
-        virtual oslInterlockedCount SAL_CALL release() SAL_OVERRIDE;
-
     protected:
         virtual ~AsyncPickerAction();