Removing unnecessary font related code

The bridging API for native fonts allow for further removal of code.

src/osx/carbon/graphics.cpp

@@ -116,15 +116,6 @@ CGColorRef wxMacCreateCGColor( const wxColour& col )
     return retval;
 }
 
-CTFontRef wxMacCreateCTFont( const wxFont& font )
-{
-#ifdef __WXMAC__
-    return wxCFRetain((CTFontRef) font.OSXGetCTFont());
-#else
-    return CTFontCreateWithName( wxCFStringRef( font.GetFaceName(), wxLocale::GetSystemEncoding() ) , font.GetPointSize() , NULL );
-#endif
-}
-
 // CGPattern wrapper class: always allocate on heap, never call destructor
 
 class wxMacCoreGraphicsPattern
@@ -809,14 +800,6 @@ wxMacCoreGraphicsBrushData::CreateGradientFunction(const wxGraphicsGradientStops
 // Font
 //
 
-#if wxOSX_USE_IPHONE
-
-extern UIFont* CreateUIFont( const wxFont& font );
-extern void DrawTextInContext( CGContextRef context, CGPoint where, UIFont *font, NSString* text );
-extern CGSize MeasureTextInContext( UIFont *font, NSString* text );
-
-#endif
-
 class wxMacCoreGraphicsFontData : public wxGraphicsObjectRefData
 {
 public:
@@ -840,7 +823,7 @@ private :
     wxCFRef< CTFontRef > m_ctFont;
     wxCFRef< CFDictionaryRef > m_ctFontAttributes;
 #if wxOSX_USE_IPHONE
-    UIFont*  m_uiFont;
+    wxCFRef< WX_UIFont > m_uiFont;
 #endif
 };
 
@@ -850,19 +833,15 @@ wxMacCoreGraphicsFontData::wxMacCoreGraphicsFontData(wxGraphicsRenderer* rendere
     m_underlined = font.GetUnderlined();
     m_strikethrough = font.GetStrikethrough();
 
-    m_ctFont.reset( wxMacCreateCTFont( font ) );
+    m_ctFont.reset( wxCFRetain( font.OSXGetCTFont() ) );
     m_ctFontAttributes.reset( wxCFRetain( font.OSXGetCTFontAttributes() ) );
 #if wxOSX_USE_IPHONE
-    m_uiFont = CreateUIFont(font);
-    wxMacCocoaRetain( m_uiFont );
+    m_uiFont.reset( wxCFRetain( font.OSXGetUIFont() ) );
 #endif
 }
 
 wxMacCoreGraphicsFontData::~wxMacCoreGraphicsFontData()
 {
-#if wxOSX_USE_IPHONE
-    wxMacCocoaRelease( m_uiFont );
-#endif
 }
 
 class wxMacCoreGraphicsBitmapData : public wxGraphicsBitmapData