GPU implementation of drawArc.

src/gpu/GrOvalRenderer.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrOvalRenderer_DEFINED
 #define GrOvalRenderer_DEFINED
 
 #include "GrColor.h"
 
 class GrDrawBatch;
 class GrShaderCaps;
+class GrStyle;
 class SkMatrix;
 struct SkRect;
 class SkRRect;
 class SkStrokeRec;
 
 /*
  * This class wraps helper functions that draw ovals and roundrects (filled & stroked)
  */
 class GrOvalRenderer {
 public:
     static GrDrawBatch* CreateOvalBatch(GrColor,
                                         const SkMatrix& viewMatrix,
                                         const SkRect& oval,
                                         const SkStrokeRec& stroke,
-                                        GrShaderCaps* shaderCaps);
+                                        const GrShaderCaps* shaderCaps);
     static GrDrawBatch* CreateRRectBatch(GrColor,
                                          const SkMatrix& viewMatrix,
                                          const SkRRect& rrect,
                                          const SkStrokeRec& stroke,
-                                         GrShaderCaps* shaderCaps);
+                                         const GrShaderCaps* shaderCaps);
 
-private:
-    GrOvalRenderer();
+    static GrDrawBatch* CreateArcBatch(GrColor,
+                                       const SkMatrix& viewMatrix,
+                                       const SkRect& oval,
+                                       SkScalar startAngle,
+                                       SkScalar sweepAngle,
+                                       bool useCenter,
+                                       const GrStyle&,
+                                       const GrShaderCaps* shaderCaps);
 };
 
 #endif // GrOvalRenderer_DEFINED