Add GrAASmallPathRenderer.

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
 
@@ skipping 50 matching lines @@
     void draw(const SkPath& path, const SkStrokeRec& stroke, SkRegion::Op op,
               bool antiAlias, uint8_t alpha);
 
     // Helper function to get a scratch texture suitable for capturing the
     // result (i.e., right size & format)
     bool getTexture(GrAutoScratchTexture* texture);
 
     // 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) {
         fBM.eraseColor(SkColorSetARGB(alpha, alpha, alpha, alpha));
     }
 
     // Canonical usage utility that draws a single path and uploads it
-    // to the GPU. The result is returned in "result".
+    // to the GPU. The result is returned.
     static GrTexture* DrawPathMaskToTexture(GrContext* context,
                                             const SkPath& path,
                                             const SkStrokeRec& stroke,
                                             const SkIRect& resultBounds,
                                             bool antiAlias,
                                             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.
@@ skipping 39 matching lines @@
                          const void *data, int rowbytes);
 
     // Compresses the bitmap stored in fBM and sends the compressed data
     // to the GPU to be stored in 'texture' using sendTextureData.
     void compressTextureData(GrTexture *texture, const GrTextureDesc& desc);
 
     typedef SkNoncopyable INHERITED;
 };
 
 #endif // GrSWMaskHelper_DEFINED