add portable and canonical font support for DM

gm/shadertext.cpp

 /*
  * Copyright 2011 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 "SkGradientShader.h"
@@ skipping 137 matching lines @@
             for (size_t ty = 0; ty < SK_ARRAY_COUNT(tileModes); ++ty) {
                 shaders[shdIdx++] = MakeBitmapShader(tileModes[tx],
                                                      tileModes[ty],
                                                      w/8, h);
             }
         }
 
         SkPaint paint;
         paint.setDither(true);
         paint.setAntiAlias(true);
+        sk_tool_utils::set_portable_typeface(&paint);
         paint.setTextSize(SkIntToScalar(pointSize));
 
         canvas->save();
         canvas->translate(SkIntToScalar(20), SkIntToScalar(10));
 
         SkPath path;
         path.arcTo(SkRect::MakeXYWH(SkIntToScalar(-40), SkIntToScalar(15),
                                     SkIntToScalar(300), SkIntToScalar(90)),
                                     SkIntToScalar(225), SkIntToScalar(90),
                                     false);
@@ skipping 24 matching lines @@
 
 private:
     typedef GM INHERITED;
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 static GM* MyFactory(void*) { return new ShaderTextGM; }
 static GMRegistry reg(MyFactory);
 }