Font variations.

include/ports/SkFontMgr.h

Index: include/ports/SkFontMgr.h
diff --git a/include/ports/SkFontMgr.h b/include/ports/SkFontMgr.h
index 4dde920085cb7da8dba2e860dba7d45550aab230..3de107189ce9765ec920c8017b11d7cd271cfec1 100644
--- a/include/ports/SkFontMgr.h
+++ b/include/ports/SkFontMgr.h
@@ -12,6 +12,7 @@
 #include "SkFontStyle.h"
 
 class SkData;
+class SkFontData;
 class SkStreamAsset;
 class SkString;
 class SkTypeface;
@@ -93,6 +94,7 @@ public:
      *  must call unref() on the returned object if it is not null.
      */
     SkTypeface* createFromStream(SkStreamAsset*, int ttcIndex = 0) const;
+    SkTypeface* createFromFontData(SkFontData*) const;
 
     /**
      *  Create a typeface for the specified fileName and TTC index
@@ -129,6 +131,8 @@ protected:
 
     virtual SkTypeface* onCreateFromData(SkData*, int ttcIndex) const = 0;
     virtual SkTypeface* onCreateFromStream(SkStreamAsset*, int ttcIndex) const = 0;
+    // ThODO: make pure virtual.
+    virtual SkTypeface* onCreateFromFontData(SkFontData*) const;
     virtual SkTypeface* onCreateFromFile(const char path[], int ttcIndex) const = 0;
 
     virtual SkTypeface* onLegacyCreateTypeface(const char familyName[],