export api with SK_API

git-svn-id: http://skia.googlecode.com/svn/trunk@7962 2bbb7eff-a529-9590-31e7-b0007b416f81

include/ports/SkFontConfigInterface.h

@@ -17,7 +17,7 @@
  *  Provides SkFontHost clients with access to fontconfig services. They will
  *  access the global instance found in RefGlobal().
  */
-class SkFontConfigInterface : public SkRefCnt {
+class SK_API SkFontConfigInterface : public SkRefCnt {
 public:
     /**
      *  Returns the global SkFontConfigInterface instance, and if it is not