Initial implementation of GPU no filter NinePatch

src/gpu/SkGrPriv.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkGrPriv_DEFINED
 #define SkGrPriv_DEFINED
 
@@ skipping 66 matching lines @@
 /** This is used when there is a primitive color, but the shader should be ignored. Currently,
     the expectation is that the primitive color will be premultiplied, though it really should be
     unpremultiplied so that interpolation is done in unpremul space. The paint's alpha will be
     applied to the primitive color after interpolation. */
 inline bool SkPaintToGrPaintWithPrimitiveColor(GrContext* context, const SkPaint& skPaint,
                                                GrPaint* grPaint) {
     return SkPaintToGrPaintWithXfermode(context, skPaint, SkMatrix::I(), SkXfermode::kDst_Mode,
                                         false, grPaint);
 }
 
+/** This is used when there may or may not be a shader, and the caller wants to plugin a texture
+    lookup.  If there is a shader, then its output will only be used if the texture is alpha8. */
+bool SkPaintToGrPaintWithTexture(GrContext* context,
+                                 const SkPaint& paint,
+                                 const SkMatrix& viewM,
+                                 const GrFragmentProcessor* fp,
+                                 bool textureIsAlphaOnly,
+                                 GrPaint* grPaint);
+
 //////////////////////////////////////////////////////////////////////////////
 
 GrSurfaceDesc GrImageInfoToSurfaceDesc(const SkImageInfo&);
 
 bool GrPixelConfig2ColorAndProfileType(GrPixelConfig, SkColorType*, SkColorProfileType*);
 
 /**
  *  If the compressed data in the SkData is supported (as a texture format, this returns
  *  the pixel-config that should be used, and sets outStartOfDataToUpload to the ptr into
  *  the data where the actual raw data starts (skipping any header bytes).
@@ skipping 23 matching lines @@
 GR_STATIC_ASSERT((int)kIDC_GrBlendCoeff == (int)SkXfermode::kIDC_Coeff);
 GR_STATIC_ASSERT((int)kSA_GrBlendCoeff == (int)SkXfermode::kSA_Coeff);
 GR_STATIC_ASSERT((int)kISA_GrBlendCoeff == (int)SkXfermode::kISA_Coeff);
 GR_STATIC_ASSERT((int)kDA_GrBlendCoeff == (int)SkXfermode::kDA_Coeff);
 GR_STATIC_ASSERT((int)kIDA_GrBlendCoeff == (int)SkXfermode::kIDA_Coeff);
 GR_STATIC_ASSERT(SkXfermode::kCoeffCount == 10);
 
 #define SkXfermodeCoeffToGrBlendCoeff(X) ((GrBlendCoeff)(X))
 
 #endif