use tmp allocator for images in temp shaders

src/core/SkBitmapProcShader.h

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #ifndef SkBitmapProcShader_DEFINED
 #define SkBitmapProcShader_DEFINED
 
 #include "SkImagePriv.h"
 #include "SkShader.h"
-#include "SkSmallAllocator.h"
 
-struct SkBitmapProcState;
 class SkBitmapProvider;
 
 class SkBitmapProcLegacyShader : public SkShader {
 private:
     friend class SkImageShader;
 
     static size_t ContextSize(const ContextRec&, const SkImageInfo& srcInfo);
     static Context* MakeContext(const SkShader&, TileMode tmx, TileMode tmy,
                                 const SkBitmapProvider&, const ContextRec&, void* storage);
 
     typedef SkShader INHERITED;
 };
 
-enum {kSkBlitterContextSize = 3332};
-
-// Commonly used allocator. It currently is only used to allocate up to 3 objects. The total
-// bytes requested is calculated using one of our large shaders, its context size plus the size of
-// an Sk3DBlitter in SkDraw.cpp
-// Note that some contexts may contain other contexts (e.g. for compose shaders), but we've not
-// yet found a situation where the size below isn't big enough.
-typedef SkSmallAllocator<3, kSkBlitterContextSize> SkTBlitterAllocator;
-
-// If alloc is non-nullptr, it will be used to allocate the returned SkShader, and MUST outlive
-// the SkShader.
-sk_sp<SkShader> SkMakeBitmapShader(const SkBitmap& src, SkShader::TileMode, SkShader::TileMode,
-                                   const SkMatrix* localMatrix, SkCopyPixelsMode,
-                                   SkTBlitterAllocator* alloc);
-
 #endif