Replace wxScopedPtr with std::unique_ptr in wxOSX

Stop using wxScopedPtr in wxOSX and use the standard class instead:
there were just a few occurrences of the former in this port, so it was
easy to get rid of it.

src/osx/carbon/dataobj.cpp

@@ -32,6 +32,8 @@
 #include "wx/osx/private.h"
 #include "wx/osx/private/datatransfer.h"
 
+#include <memory>
+
 static CFStringRef kUTTypeTraditionalMacText = CFSTR("com.apple.traditional-mac-plain-text");
 
 static wxString privateUTIPrefix = "org.wxwidgets.private.";
@@ -423,7 +425,7 @@ bool wxDataObject::ReadFromSource(wxOSXDataSource * source)
             
             for ( size_t itemIndex = 0; itemIndex < itemCount && !transferred; ++itemIndex)
             {
-                wxScopedPtr<const wxOSXDataSourceItem> sitem(source->GetItem(itemIndex));
+                std::unique_ptr<const wxOSXDataSourceItem> sitem(source->GetItem(itemIndex));
                 
                 wxDataFormat::NativeFormat nativeFormat = sitem->AvailableType(typesarray);
                 CFDataRef flavorData = sitem->DoGetData(nativeFormat);

src/osx/cocoa/taskbar.mm

@@ -19,11 +19,12 @@
     #include "wx/dcclient.h"
 #endif
 
-#include "wx/scopedptr.h"
 #include "wx/taskbar.h"
 
 #include "wx/osx/private.h"
 
+#include <memory>
+
 class wxTaskBarIconWindow;
 
 //-----------------------------------------------------------------------------
@@ -105,7 +106,7 @@ protected:
 private:
     wxTaskBarIconDockImpl();
     wxMenu             *m_pMenu;
-    wxScopedPtr<wxMenu> m_menuDeleter;
+    std::unique_ptr<wxMenu> m_menuDeleter;
 };
 
 class wxTaskBarIconCustomStatusItemImpl;

src/osx/core/utilsexc_cf.cpp

@@ -31,6 +31,8 @@
 
 #if wxUSE_EVENTLOOP_SOURCE
 
+#include <memory>
+
 namespace
 {
 
@@ -76,7 +78,7 @@ public:
     {
         wxCHECK_MSG( fd != -1, nullptr, "can't monitor invalid fd" );
 
-        wxScopedPtr<wxCFEventLoopSource>
+        std::unique_ptr<wxCFEventLoopSource>
             source(new wxCFEventLoopSource(handler, flags));
 
         CFSocketContext context = { 0, source.get(), nullptr, nullptr, nullptr };

src/osx/menu_osx.cpp

@@ -31,13 +31,14 @@
 #endif
 
 #include "wx/osx/private.h"
-#include "wx/scopedptr.h"
 #include "wx/private/menuradio.h" // for wxMenuRadioItemsData
 
 // other standard headers
 // ----------------------
 #include <string.h>
 
+#include <memory>
+
 wxIMPLEMENT_ABSTRACT_CLASS(wxMenuImpl, wxObject);
 
 wxMenuImpl::~wxMenuImpl()
@@ -47,7 +48,7 @@ wxMenuImpl::~wxMenuImpl()
 // the (popup) menu title has this special menuid
 static const int idMenuTitle = -3;
 
-wxScopedPtr<wxMenu> gs_emptyMenuBar;
+std::unique_ptr<wxMenu> gs_emptyMenuBar;
 
 // ============================================================================
 // implementation

src/osx/nonownedwnd_osx.cpp

@@ -533,7 +533,7 @@ bool wxNonOwnedWindow::DoSetRegionShape(const wxRegion& region)
 
 #if wxUSE_GRAPHICS_CONTEXT
 
-#include "wx/scopedptr.h"
+#include <memory>
 
 bool wxNonOwnedWindow::DoSetPathShape(const wxGraphicsPath& path)
 {
@@ -547,7 +547,7 @@ bool wxNonOwnedWindow::DoSetPathShape(const wxGraphicsPath& path)
         dc.SetBackground(*wxBLACK_BRUSH);
         dc.Clear();
 
-        wxScopedPtr<wxGraphicsContext> context(wxGraphicsContext::Create(dc));
+        std::unique_ptr<wxGraphicsContext> context(wxGraphicsContext::Create(dc));
         context->SetBrush(*wxWHITE_BRUSH);
         context->SetAntialiasMode(wxANTIALIAS_NONE);
         context->FillPath(path);