Batch multiple single NVPR draw paths to instanced draws

src/gpu/gl/GrGLPathRendering.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGLPathRendering_DEFINED
 #define GrGLPathRendering_DEFINED
 
@@ skipping 47 matching lines @@
     /* Sets the projection matrix for path rendering */
     void setProjectionMatrix(const SkMatrix& matrix,
                              const SkISize& renderTargetSize,
                              GrSurfaceOrigin renderTargetOrigin);
 
     GrGLuint genPaths(GrGLsizei range);
     GrGLvoid deletePaths(GrGLuint path, GrGLsizei range);
 
 protected:
     void onStencilPath(const StencilPathArgs&, const GrPath*) override;
-    void onDrawPath(const GrPipeline&,
-                    const GrPrimitiveProcessor&,
-                    const GrStencilSettings&,
-                    const GrPath*) override;
     void onDrawPaths(const GrPipeline&,
                      const GrPrimitiveProcessor&,
                      const GrStencilSettings&,
                      const GrPathRange*,
                      const void* indices,
                      PathIndexType,
                      const float transformValues[],
                      PathTransformType,
                      int count) override;
+    void onDrawPaths(const GrPipeline&,
+                     const GrPrimitiveProcessor&,
+                     const GrStencilSettings&,
+                     const GrPath* const*,
+                     int count) override;
 private:
     /**
      * Mark certain functionality as not supported.
      */
     struct Caps {
         bool bindFragmentInputSupport : 1;
     };
 
     void flushPathStencilSettings(const GrStencilSettings&);
 
@@ skipping 31 matching lines @@
     GrGLGpu* gpu();
 
     GrGLuint fFirstPreallocatedPathID;
     GrGLsizei fPreallocatedPathCount;
     MatrixState fHWProjectionMatrixState;
     GrStencilSettings fHWPathStencilSettings;
     Caps fCaps;
 };
 
 #endif