remove unused GM flags

gm/imagealphathreshold.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 "SkAlphaThresholdFilter.h"
 #include "SkRandom.h"
 
 #define WIDTH 500
 #define HEIGHT 500
 
 namespace skiagm {
 
 class ImageAlphaThresholdGM : public GM {
 public:
     ImageAlphaThresholdGM() {
         this->setBGColor(0xFFFFFFFF);
     }
 
 protected:
-    uint32_t onGetFlags() const SK_OVERRIDE {
-        return this->INHERITED::onGetFlags() |
-               GM::kSkipTiled_Flag |
-               GM::kSkipPicture_Flag |
-               GM::kSkipPipe_Flag |
-               GM::kSkipPipeCrossProcess_Flag;
-    }
 
     SkString onShortName() SK_OVERRIDE {
         return SkString("imagealphathreshold");
     }
 
     SkISize onISize() SK_OVERRIDE {
         return SkISize::Make(WIDTH, HEIGHT);
     }
 
     void onDraw(SkCanvas* canvas) SK_OVERRIDE {
@@ skipping 36 matching lines @@
 private:
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static GM* MyFactory(void*) { return new ImageAlphaThresholdGM; }
 static GMRegistry reg(MyFactory);
 
 }