add portable and canonical font support for DM

gm/srcmode.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 "SkGradientShader.h"
@@ skipping 62 matching lines @@
     }
 
     virtual SkISize onISize() {
         return SkISize::Make(640, 760);
     }
 
     void drawContent(SkCanvas* canvas) {
         canvas->translate(SkIntToScalar(20), SkIntToScalar(20));
 
         SkPaint paint;
+        sk_tool_utils::set_portable_typeface(&paint);
         paint.setColor(0x80FF0000);
 
         const Proc procs[] = {
             draw_hair, draw_thick, draw_rect, draw_oval, draw_text
         };
 
         const SkXfermode::Mode modes[] = {
             SkXfermode::kSrcOver_Mode, SkXfermode::kSrc_Mode, SkXfermode::kClear_Mode
         };
 
@@ skipping 47 matching lines @@
         surf->draw(canvas, 0, 0, NULL);
     }
 
 private:
     typedef skiagm::GM INHERITED;
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 DEF_GM(return new SrcModeGM;)