Remove hasMixedSamples() from GrPipelineBuilder

include/gpu/effects/GrPorterDuffXferProcessor.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrPorterDuffXferProcessor_DEFINED
 #define GrPorterDuffXferProcessor_DEFINED
 
@@ skipping 30 matching lines @@
             blendedColor->fWillBlendWithDst = true;
             blendedColor->fKnownColorFlags = kNone_GrColorComponentFlags;
             return;
         }
         blendedColor->fWillBlendWithDst = false;
 
         blendedColor->fKnownColor = inputColor;
         blendedColor->fKnownColorFlags = validColorFlags;
     }
 
-    static bool SrcOverWillNeedDstTexture(const GrCaps& caps,
-                                          const GrPipelineOptimizations& optimizations,
-                                          bool hasMixedSamples);
+    static bool SrcOverWillNeedDstTexture(const GrCaps&, const GrPipelineOptimizations&);
 
 private:
     GrPorterDuffXPFactory(SkXfermode::Mode);
 
     GrXferProcessor* onCreateXferProcessor(const GrCaps& caps,
                                            const GrPipelineOptimizations& optimizations,
                                            bool hasMixedSamples,
                                            const DstTexture*) const override;
 
-    bool onWillReadDstColor(const GrCaps& caps,
-                            const GrPipelineOptimizations& optimizations,
-                            bool hasMixedSamples) const override;
+    bool onWillReadDstColor(const GrCaps&, const GrPipelineOptimizations&) const override;
 
     bool onIsEqual(const GrXPFactory& xpfBase) const override {
         const GrPorterDuffXPFactory& xpf = xpfBase.cast<GrPorterDuffXPFactory>();
         return fXfermode == xpf.fXfermode;
     }
 
     GR_DECLARE_XP_FACTORY_TEST;
     static void TestGetXPOutputTypes(const GrXferProcessor*, int* outPrimary, int* outSecondary);
 
     SkXfermode::Mode fXfermode;
 
     friend class GrPorterDuffTest; // for TestGetXPOutputTypes()
     typedef GrXPFactory INHERITED;
 };
 
 #endif