Move font loading in gm tests and benches out of constructors

gm/textblob.cpp

 /*
  * Copyright 2014 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"
@@ skipping 49 matching lines @@
         { { 4,   kPoint_Pos, 1 },     { 4, kDefault_Pos, .75f },  { 4,  kScalar_Pos, 1.25f } },
     },
 };
 
 const SkScalar kFontSize = 16;
 }
 
 class TextBlobGM : public skiagm::GM {
 public:
     TextBlobGM(const char* txt)
-        : fTypeface(sk_tool_utils::create_portable_typeface("Times", SkTypeface::kNormal)) {
-        SkPaint p;
-        p.setTypeface(fTypeface);
-        size_t txtLen = strlen(txt);
-        int glyphCount = p.textToGlyphs(txt, txtLen, NULL);
-
-        fGlyphs.append(glyphCount);
-        p.textToGlyphs(txt, txtLen, fGlyphs.begin());
+        : fText(txt) {
     }
 
 protected:
+    void onOnceBeforeDraw() override {
+        fTypeface.reset(sk_tool_utils::create_portable_typeface("Times", SkTypeface::kNormal));
+        SkPaint p;
+        p.setTypeface(fTypeface);
+        size_t txtLen = strlen(fText);
+        int glyphCount = p.textToGlyphs(fText, txtLen, NULL);
+
+        fGlyphs.append(glyphCount);
+        p.textToGlyphs(fText, txtLen, fGlyphs.begin());
+    }
+
     SkString onShortName() override {
         return SkString("textblob");
     }
 
     SkISize onISize() override {
         return SkISize::Make(640, 480);
     }
 
     void onDraw(SkCanvas* canvas) override {
         for (unsigned b = 0; b < SK_ARRAY_COUNT(blobConfigs); ++b) {
@@ skipping 80 matching lines @@
 
                 currentGlyph += count;
             }
         }
 
         return builder.build();
     }
 
     SkTDArray<uint16_t>      fGlyphs;
     SkAutoTUnref<SkTypeface> fTypeface;
-
+    const char*              fText;
     typedef skiagm::GM INHERITED;
 };
 
 DEF_GM( return SkNEW_ARGS(TextBlobGM, ("hamburgefons")); )