clean up printf usage in gm

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 "SkGradientShader.h"
 
@@ skipping 46 matching lines @@
 public:
     SkBitmap    fBM;
     SkMatrix    fMatrix[2];
     SkString    fName;
 
     FilterBitmapGM()
     {
         this->setBGColor(0xFFDDDDDD);
     }
 
-    void setName(const char name[]) {
-        fName.set(name);
-    }
-
 protected:
     virtual SkString onShortName() SK_OVERRIDE {
         return fName;
     }
 
     virtual SkISize onISize() SK_OVERRIDE {
         return SkISize::Make(920, 480);
     }
 
     virtual void make_bitmap() = 0;
@@ skipping 14 matching lines @@
 
 private:
     typedef skiagm::GM INHERITED;
 };
 
 class FilterBitmapTextGM: public FilterBitmapGM {
   public:
       FilterBitmapTextGM(float textSize)
       : fTextSize(textSize)
         {
-            char name[1024];
-            sprintf(name, "filterbitmap_text_%.2fpt", fTextSize);
-            setName(name);
+            fName.printf("filterbitmap_text_%.2fpt", fTextSize);
         }
 
   protected:
       float fTextSize;
 
       SkScalar get_scale() SK_OVERRIDE {
           return 32.f/fTextSize;
       }
 
       void make_bitmap() SK_OVERRIDE {
@@ skipping 18 matching lines @@
       }
   private:
       typedef FilterBitmapGM INHERITED;
 };
 
 class FilterBitmapCheckerboardGM: public FilterBitmapGM {
   public:
       FilterBitmapCheckerboardGM(int size, int num_checks)
       : fSize(size), fNumChecks(num_checks)
         {
-            char name[1024];
-            sprintf(name, "filterbitmap_checkerboard_%d_%d", fSize, fNumChecks);
-            setName(name);
+            fName.printf("filterbitmap_checkerboard_%d_%d", fSize, fNumChecks);
         }
 
   protected:
       int fSize;
       int fNumChecks;
 
       SkScalar get_scale() SK_OVERRIDE {
           return 192.f/fSize;
       }
 
@@ skipping 16 matching lines @@
       }
   private:
       typedef FilterBitmapGM INHERITED;
 };
 
 class FilterBitmapImageGM: public FilterBitmapGM {
   public:
       FilterBitmapImageGM(const char filename[])
       : fFilename(filename)
         {
-            char name[1024];
-            sprintf(name, "filterbitmap_image_%s", filename);
-            setName(name);
+            fName.printf("filterbitmap_image_%s", filename);
         }
 
   protected:
       SkString fFilename;
       int fSize;
 
       SkScalar get_scale() SK_OVERRIDE {
           return 192.f/fSize;
       }
 
@@ skipping 32 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"); )