vcl: replace boost::ptr_deque with std::deque<std::unique_ptr>

Change-Id: Id53ee54dda5454669affd5ca5324a2d7c5387063

vcl/inc/outdevstatestack.hxx

@@ -11,12 +11,12 @@
 #define INCLUDED_VCL_OUTDEVSTATESTACK_HXX
 
 #include <vcl/outdevstate.hxx>
-
-#include <boost/ptr_container/ptr_deque.hpp>
+#include <memory>
+#include <deque>
 
 class OutDevStateStack
 {
-    typedef boost::ptr_deque<OutDevState> DataType;
+    typedef std::deque<std::unique_ptr<OutDevState>> DataType;
     DataType maData;
 public:
     bool empty() const;

vcl/source/outdev/outdevstatestack.cxx

@@ -21,7 +21,7 @@ size_t OutDevStateStack::size() const
 
 void OutDevStateStack::push_back( OutDevState* p )
 {
-    maData.push_back(p);
+    maData.push_back(std::unique_ptr<OutDevState>(p));
 }
 
 void OutDevStateStack::pop_back()
@@ -31,7 +31,7 @@ void OutDevStateStack::pop_back()
 
 OutDevState& OutDevStateStack::back()
 {
-    return maData.back();
+    return *maData.back();
 }
 
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