Implement path cover with nv_path_rendering

src/gpu/GrGpu.h

Index: src/gpu/GrGpu.h
diff --git a/src/gpu/GrGpu.h b/src/gpu/GrGpu.h
index 239ae6bd8362d3dbd25a7ca8b76027f8169afb6f..6a9dfa2b58038506912a9c6b9dedc7d75c014e15 100644
--- a/src/gpu/GrGpu.h
+++ b/src/gpu/GrGpu.h
@@ -335,12 +335,15 @@ public:
                                                  // clipping.
     };
 
+    void getPathStencilSettingsForFillType(SkPath::FillType fill, GrStencilSettings* outStencilSettings);
+
 protected:
     enum DrawType {
         kDrawPoints_DrawType,
         kDrawLines_DrawType,
         kDrawTriangles_DrawType,
         kStencilPath_DrawType,
+        kFillPath_DrawType,
     };
 
     DrawType PrimTypeToDrawType(GrPrimitiveType type) {
@@ -440,15 +443,10 @@ private:
 
     // overridden by backend-specific derived class to perform the draw call.
     virtual void onGpuDraw(const DrawInfo&) = 0;
-    // when GrDrawTarget::stencilPath is called the draw state's current stencil
-    // settings are ignored. Instead the GrGpu decides the stencil rules
-    // necessary to stencil the path. These are still subject to filtering by
-    // the clip mask manager.
-    virtual void setStencilPathSettings(const GrPath&,
-                                        SkPath::FillType,
-                                        GrStencilSettings* settings) = 0;
+
     // overridden by backend-specific derived class to perform the path stenciling.
     virtual void onGpuStencilPath(const GrPath*, SkPath::FillType) = 0;
+    virtual void onGpuFillPath(const GrPath*, SkPath::FillType) = 0;
 
     // overridden by backend-specific derived class to perform flush
     virtual void onForceRenderTargetFlush() = 0;
@@ -494,6 +492,9 @@ private:
     virtual void onStencilPath(const GrPath* path, const SkStrokeRec& stroke,
                                SkPath::FillType) SK_OVERRIDE;
 
+    virtual void onFillPath(const GrPath* path, const SkStrokeRec& stroke, SkPath::FillType,
+                            const GrDeviceCoordTexture* dstCopy) SK_OVERRIDE;
+
     // readies the pools to provide vertex/index data.
     void prepareVertexPool();
     void prepareIndexPool();