remove unused GM flags

gm/hairmodes.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 "SkCanvas.h"
 #include "SkColorPriv.h"
@@ skipping 103 matching lines @@
 
                     canvas->translate(0, dy * 5 / 4);
                     SkSafeUnref(mode);
                 }
                 canvas->restore();
                 canvas->restore();
                 canvas->translate(W * 5 / 4, 0);
             }
         }
 
-        // disable pdf for now, since it crashes on mac
-        virtual uint32_t onGetFlags() const { return kSkipPDF_Flag | kSkipTiled_Flag; }
-
     private:
         typedef GM INHERITED;
     };
 
     //////////////////////////////////////////////////////////////////////////////
 
     static GM* MyFactory(void*) { return new HairModesGM; }
     static GMRegistry reg(MyFactory);
 
 }