remove unused MakeFromPixmap

src/core/SkSpecialImage.h

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file
  */
 
 #ifndef SkSpecialImage_DEFINED
 #define SkSpecialImage_DEFINED
 
@@ skipping 62 matching lines @@
     static sk_sp<SkSpecialImage> MakeFromRaster(const SkIRect& subset,
                                                 const SkBitmap&,
                                                 const SkSurfaceProps* = nullptr);
 #if SK_SUPPORT_GPU
     static sk_sp<SkSpecialImage> MakeFromGpu(const SkIRect& subset,
                                              uint32_t uniqueID,
                                              sk_sp<GrTexture>,
                                              const SkSurfaceProps* = nullptr,
                                              SkAlphaType at = kPremul_SkAlphaType);
 #endif
-    static sk_sp<SkSpecialImage> MakeFromPixmap(const SkIRect& subset,
-                                                const SkPixmap&,
-                                                RasterReleaseProc,
-                                                ReleaseContext,
-                                                const SkSurfaceProps* = nullptr);
 
     /**
      *  Create a new special surface with a backend that is compatible with this special image.
      */
     sk_sp<SkSpecialSurface> makeSurface(const SkImageInfo&) const;
 
     /**
      * Create a new surface with a backend that is compatible with this special image.
      * TODO: switch this to makeSurface once we resolved the naming issue
      */
@@ skipping 49 matching lines @@
 
 private:
     const SkSurfaceProps fProps;
     const SkIRect        fSubset;
     const uint32_t       fUniqueID;
 
     typedef SkRefCnt INHERITED;
 };
 
 #endif