Add wxIcon::GetSize() to wxIcon in wxOSX.

This fixes the compilation errors under OS X after r65884 due to the lack of
this method there.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@65887 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/cocoa/icon.h

@@ -48,6 +48,8 @@ public:
     int GetWidth() const;
     int GetHeight() const;
 
+    wxSize GetSize() const { return wxSize(GetWidth(), GetHeight()); }
+
     WX_NSImage GetNSImage() const;
     bool CreateFromXpm(const char* const* bits);
 

include/wx/osx/icon.h

@@ -50,6 +50,8 @@ public:
     void SetDepth(int d);
     void SetOk(bool isOk);
 
+    wxSize GetSize() const { return wxSize(GetWidth(), GetHeight()); }
+
     WXHICON GetHICON() const;
 
 protected: