Add wxGraphicsRenderer::GetName() and GetVersion() methods.

Allow the code to determine which underlying technology is used for
implementing wxGraphics API. This is needed by the unit tests to account for
the known differences between platforms and may be useful in other cases.

Closes #16154.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76380 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/osx/carbon/graphics.cpp

@@ -2654,6 +2654,10 @@ public :
 
     // create a native bitmap representation
     virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h  ) wxOVERRIDE ;
+
+    virtual wxString GetName() const wxOVERRIDE;
+    virtual void GetVersion(int *major, int *minor, int *micro) const wxOVERRIDE;
+
 private :
     DECLARE_DYNAMIC_CLASS_NO_COPY(wxMacCoreGraphicsRenderer)
 } ;
@@ -2875,6 +2879,21 @@ wxGraphicsBitmap wxMacCoreGraphicsRenderer::CreateSubBitmap( const wxGraphicsBit
         return wxNullGraphicsBitmap;
 }
 
+wxString wxMacCoreGraphicsRenderer::GetName() const
+{
+    return "cg";
+}
+
+void wxMacCoreGraphicsRenderer::GetVersion(int *major, int *minor, int *micro) const
+{
+    if ( major )
+        *major = wxPlatformInfo::Get().GetOSMajorVersion();
+    if ( minor )
+        *minor = wxPlatformInfo::Get().GetOSMinorVersion();
+    if ( micro )
+        *micro = 0;
+}
+
 wxGraphicsBrush
 wxMacCoreGraphicsRenderer::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
                                                      wxDouble x2, wxDouble y2,