Revert of Revert of Extract most of the mutable state of SkShader into a separate Context object.

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
@@ skipping 71 matching lines @@
 
     SkPMColor           fPaintPMColor;      // chooseProcs - A8 config
     SkFixed             fInvSx;             // chooseProcs
     SkFixed             fInvKy;             // chooseProcs
     uint16_t            fAlphaScale;        // chooseProcs
     uint8_t             fInvType;           // chooseProcs
     uint8_t             fTileModeX;         // CONSTRUCTOR
     uint8_t             fTileModeY;         // CONSTRUCTOR
     uint8_t             fFilterLevel;       // chooseProcs
 
-    /** The shader will let us know when we can release some of our resources
-      * like scaled bitmaps.
-      */
-
-    void endContext();
-
     /** Platforms implement this, and can optionally overwrite only the
         following fields:
 
         fShaderProc32
         fShaderProc16
         fMatrixProc
         fSampleProc32
         fSampleProc32
 
         They will already have valid function pointers, so a platform that does
@@ skipping 121 matching lines @@
 void S32_D16_filter_DX(const SkBitmapProcState& s,
                        const uint32_t* xy, int count, uint16_t* colors);
 
 void highQualityFilter32(const SkBitmapProcState &s, int x, int y,
                          SkPMColor *SK_RESTRICT colors, int count);
 void highQualityFilter16(const SkBitmapProcState &s, int x, int y,
                          uint16_t *SK_RESTRICT colors, int count);
 
 
 #endif