move SkBitmapProvider to its own file

src/core/SkBitmapProcShader.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBitmapProcShader.h"
 #include "SkBitmapProcState.h"
+#include "SkBitmapProvider.h"
 #include "SkColorPriv.h"
 #include "SkErrorInternals.h"
 #include "SkPixelRef.h"
 #include "SkReadBuffer.h"
 #include "SkWriteBuffer.h"
 
 #if SK_SUPPORT_GPU
 #include "effects/GrBicubicEffect.h"
 #include "effects/GrExtractAlphaFragmentProcessor.h"
 #include "effects/GrSimpleTextureEffect.h"
@@ skipping 51 matching lines @@
     unsigned mask = SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask;
     return (matrix.getType() & ~mask) == 0;
 }
 
 bool SkBitmapProcShader::isOpaque() const {
     return fRawBitmap.isOpaque();
 }
 
 SkShader::Context* SkBitmapProcShader::MakeContext(const SkShader& shader,
                                                    TileMode tmx, TileMode tmy,
-                                                   const SkBitmap& bitmap,
+                                                   const SkBitmapProvider& provider,
                                                    const ContextRec& rec, void* storage) {
     SkMatrix totalInverse;
     // Do this first, so we know the matrix can be inverted.
     if (!shader.computeTotalInverse(rec, &totalInverse)) {
         return nullptr;
     }
 
     void* stateStorage = (char*)storage + sizeof(BitmapProcShaderContext);
-    SkBitmapProcState* state = new (stateStorage) SkBitmapProcState(SkBitmapProvider(bitmap),
-                                                                    tmx, tmy);
+    SkBitmapProcState* state = new (stateStorage) SkBitmapProcState(provider, tmx, tmy);
 
     SkASSERT(state);
     if (!state->chooseProcs(totalInverse, *rec.fPaint)) {
         state->~SkBitmapProcState();
         return nullptr;
     }
 
     return new (storage) BitmapProcShaderContext(shader, rec, state);
 }
 
 SkShader::Context* SkBitmapProcShader::onCreateContext(const ContextRec& rec, void* storage) const {
-    return MakeContext(*this, (TileMode)fTileModeX, (TileMode)fTileModeY, fRawBitmap, rec, storage);
+    return MakeContext(*this, (TileMode)fTileModeX, (TileMode)fTileModeY,
+                       SkBitmapProvider(fRawBitmap), rec, storage);
 }
 
 SkBitmapProcShader::BitmapProcShaderContext::BitmapProcShaderContext(const SkShader& shader,
                                                                      const ContextRec& rec,
                                                                      SkBitmapProcState* state)
     : INHERITED(shader, rec)
     , fState(state)
 {
     const SkPixmap& pixmap = fState->fPixmap;
     bool isOpaque = pixmap.isOpaque();
@@ skipping 293 matching lines @@
         inner.reset(GrSimpleTextureEffect::Create(procDataManager, texture, matrix, params));
     }
 
     if (kAlpha_8_SkColorType == fRawBitmap.colorType()) {
         return SkRef(inner.get());
     }
     return GrExtractAlphaFragmentProcessor::Create(inner);
 }
 
 #endif