add portable and canonical font support for DM

gm/filterbitmap.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 "Resources.h"
 #include "SkGradientShader.h"
 #include "SkImageDecoder.h"
 #include "SkStream.h"
 #include "SkTypeface.h"
 
 static void setTypeface(SkPaint* paint, const char name[], SkTypeface::Style style) {
-    SkSafeUnref(paint->setTypeface(SkTypeface::CreateFromName(name, style)));
+    sk_tool_utils::set_portable_typeface(paint, name, style);
 }
 
 static SkSize computeSize(const SkBitmap& bm, const SkMatrix& mat) {
     SkRect bounds = SkRect::MakeWH(SkIntToScalar(bm.width()),
                                    SkIntToScalar(bm.height()));
     mat.mapRect(&bounds);
     return SkSize::Make(bounds.width(), bounds.height());
 }
 
 static void draw_row(SkCanvas* canvas, const SkBitmap& bm, const SkMatrix& mat, SkScalar dx) {
@@ skipping 195 matching lines @@
 DEF_GM( return new FilterBitmapCheckerboardGM(32,32); )
 DEF_GM( return new FilterBitmapCheckerboardGM(32,8); )
 DEF_GM( return new FilterBitmapCheckerboardGM(32,2); )
 DEF_GM( return new FilterBitmapCheckerboardGM(192,192); )
 DEF_GM( return new FilterBitmapImageGM("mandrill_16.png"); )
 DEF_GM( return new FilterBitmapImageGM("mandrill_32.png"); )
 DEF_GM( return new FilterBitmapImageGM("mandrill_64.png"); )
 DEF_GM( return new FilterBitmapImageGM("mandrill_128.png"); )
 DEF_GM( return new FilterBitmapImageGM("mandrill_256.png"); )
 DEF_GM( return new FilterBitmapImageGM("mandrill_512.png"); )