add portable and canonical font support for DM

gm/getpostextpath.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "gm.h"
 #include "SkCanvas.h"
 #include "SkPaint.h"
@@ skipping 24 matching lines @@
     }
 
     virtual void onDraw(SkCanvas* canvas) {
         // explicitly add spaces, to test a prev. bug
         const char* text = "Ham bur ge fons";
         int len = SkToInt(strlen(text));
         SkPath path;
 
         SkPaint paint;
         paint.setAntiAlias(true);
+        sk_tool_utils::set_portable_typeface(&paint);
         paint.setTextSize(SkIntToScalar(48));
 
         canvas->translate(SkIntToScalar(10), SkIntToScalar(64));
 
         canvas->drawText(text, len, 0, 0, paint);
         paint.getTextPath(text, len, 0, 0, &path);
         strokePath(canvas, path);
         path.reset();
 
         SkAutoTArray<SkPoint>  pos(len);
@@ skipping 13 matching lines @@
         canvas->drawPosText(text, len, &pos[0], paint);
         paint.getPosTextPath(text, len, &pos[0], &path);
         strokePath(canvas, path);
     }
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static skiagm::GM* F(void*) { return new GetPosTextPathGM; }
 static skiagm::GMRegistry gR(F);