GrSWMaskHelper and GrSoftwarePathRenderer only need the textureProvider (not GrContext)

src/gpu/GrSWMaskHelper.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrSWMaskHelper_DEFINED
 #define GrSWMaskHelper_DEFINED
 
 #include "SkAutoPixmapStorage.h"
 #include "GrColor.h"
 #include "GrPipelineBuilder.h"
 #include "SkBitmap.h"
 #include "SkDraw.h"
 #include "SkMatrix.h"
 #include "SkRasterClip.h"
 #include "SkRegion.h"
 #include "SkTypes.h"
 
 class GrClip;
-class GrContext;
+class GrTextureProvider;
 class GrTexture;
 class SkPath;
 class SkStrokeRec;
 class GrDrawTarget;
 
 /**
  * The GrSWMaskHelper helps generate clip masks using the software rendering
  * path. It is intended to be used as:
  *
  *   GrSWMaskHelper helper(context);
  *   helper.init(...);
  *
  *      draw one or more paths/rects specifying the required boolean ops
  *
  *   toTexture();   // to get it from the internal bitmap to the GPU
  *
  * The result of this process will be the final mask (on the GPU) in the
  * upper left hand corner of the texture.
  */
 class GrSWMaskHelper : SkNoncopyable {
 public:
-    GrSWMaskHelper(GrContext* context) : fContext(context) { }
+    GrSWMaskHelper(GrTextureProvider* texProvider) : fTexProvider(texProvider) { }
 
     // set up the internal state in preparation for draws. Since many masks
     // may be accumulated in the helper during creation, "resultBounds"
     // allows the caller to specify the region of interest - to limit the
     // amount of work.
     bool init(const SkIRect& resultBounds, const SkMatrix* matrix);
 
     // Draw a single rect into the accumulation bitmap using the specified op
     void drawRect(const SkRect& rect, SkRegion::Op op, bool antiAlias, uint8_t alpha);
 
     // Draw a single path into the accumuation bitmap using the specified op
     void drawPath(const SkPath& path, const GrStyle& style, SkRegion::Op op,
                   bool antiAlias, uint8_t alpha);
 
     // Move the mask generation results from the internal bitmap to the gpu.
     void toTexture(GrTexture* texture);
 
     // Convert mask generation results to a signed distance field
     void toSDF(unsigned char* sdf);
 
     // Reset the internal bitmap
     void clear(uint8_t alpha) {
         fPixels.erase(SkColorSetARGB(alpha, 0xFF, 0xFF, 0xFF));
     }
 
     // Canonical usage utility that draws a single path and uploads it
     // to the GPU. The result is returned.
-    static GrTexture* DrawPathMaskToTexture(GrContext* context,
+    static GrTexture* DrawPathMaskToTexture(GrTextureProvider*,
                                             const SkPath& path,
                                             const GrStyle& style,
                                             const SkIRect& resultBounds,
                                             bool antiAlias,
                                             const SkMatrix* matrix);
 
     // This utility routine is used to add a path's mask to some other draw.
     // The ClipMaskManager uses it to accumulate clip masks while the
     // GrSoftwarePathRenderer uses it to fulfill a drawPath call.
     // It draws with "texture" as a path mask into "target" using "rect" as
     // geometry and the current drawState. The current drawState is altered to
     // accommodate the mask.
     // Note that this method assumes that the GrPaint::kTotalStages slot in
     // the draw state can be used to hold the mask texture stage.
     // This method is really only intended to be used with the
     // output of DrawPathMaskToTexture.
     static void DrawToTargetWithPathMask(GrTexture* texture,
                                          GrDrawTarget* target,
                                          GrPipelineBuilder* pipelineBuilder,
                                          const GrClip&,
                                          GrColor,
                                          const SkMatrix& viewMatrix,
                                          const SkIRect& rect);
 
 private:
     // Helper function to get a scratch texture suitable for capturing the
     // result (i.e., right size & format)
     GrTexture* createTexture();
 
-    GrContext*      fContext;
-    SkMatrix        fMatrix;
+    GrTextureProvider*  fTexProvider;
+    SkMatrix            fMatrix;
     SkAutoPixmapStorage fPixels;
-    SkDraw          fDraw;
-    SkRasterClip    fRasterClip;
+    SkDraw              fDraw;
+    SkRasterClip        fRasterClip;
 
     typedef SkNoncopyable INHERITED;
 };
 
 #endif // GrSWMaskHelper_DEFINED