switch bitmapshader internals over to pixmap

src/core/SkBitmapProcState.h

 /*
  * Copyright 2007 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 SkBitmapProcState_DEFINED
 #define SkBitmapProcState_DEFINED
 
@@ skipping 34 matching lines @@
 
     typedef void (*SampleProc16)(const SkBitmapProcState&,
                                  const uint32_t[],
                                  int count,
                                  uint16_t colors[]);
 
     typedef U16CPU (*FixedTileProc)(SkFixed);   // returns 0..0xFFFF
     typedef U16CPU (*FixedTileLowBitsProc)(SkFixed, int);   // returns 0..0xF
     typedef U16CPU (*IntTileProc)(int value, int count);   // returns 0..count-1
 
-    const SkBitmap*     fBitmap;            // chooseProcs - orig or scaled
+    SkPixmap            fPixmap;
     SkMatrix            fInvMatrix;         // copy of what is in fBMState, can we remove the dup?
 
     SkMatrix::MapXYProc fInvProc;           // chooseProcs
 
     SkFractionalInt     fInvSxFractionalInt;
     SkFractionalInt     fInvKyFractionalInt;
 
     FixedTileProc       fTileProcX;         // chooseProcs
     FixedTileProc       fTileProcY;         // chooseProcs
     FixedTileLowBitsProc fTileLowBitsProcX; // chooseProcs
@@ skipping 123 matching lines @@
 void ClampX_ClampY_filter_affine(const SkBitmapProcState& s,
                                  uint32_t xy[], int count, int x, int y);
 void ClampX_ClampY_nofilter_affine(const SkBitmapProcState& s,
                                    uint32_t xy[], int count, int x, int y);
 void S32_D16_filter_DX(const SkBitmapProcState& s,
                        const uint32_t* xy, int count, uint16_t* colors);
 void S32_D16_filter_DXDY(const SkBitmapProcState& s,
                          const uint32_t* xy, int count, uint16_t* colors);
 
 #endif