add portable and canonical font support for DM

gm/dropshadowimagefilter.cpp

 /*
  * Copyright 2013 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 "SkColorFilter.h"
 
@@ skipping 21 matching lines @@
     canvas->clipRect(r);
     canvas->drawCircle(r.centerX(), r.centerY(), r.width()/3, paint);
     canvas->restore();
 }
 
 static void draw_text(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) {
     SkPaint paint;
     paint.setImageFilter(imf);
     paint.setColor(SK_ColorGREEN);
     paint.setAntiAlias(true);
+    sk_tool_utils::set_portable_typeface(&paint);
     paint.setTextSize(r.height()/2);
     paint.setTextAlign(SkPaint::kCenter_Align);
     canvas->save();
     canvas->clipRect(r);
     canvas->drawText("Text", 4, r.centerX(), r.centerY(), paint);
     canvas->restore();
 }
 
 static void draw_bitmap(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) {
     SkPaint paint;
@@ skipping 111 matching lines @@
     }
 
 private:
     typedef GM INHERITED;
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 static skiagm::GM* MyFactory(void*) { return new DropShadowImageFilterGM; }
 static skiagm::GMRegistry reg(MyFactory);