clear stencil clip on draw target

src/gpu/GrInOrderDrawBuffer.h

Index: src/gpu/GrInOrderDrawBuffer.h
diff --git a/src/gpu/GrInOrderDrawBuffer.h b/src/gpu/GrInOrderDrawBuffer.h
index 5d0fc0440dfc9b2813c89c9620cf078af10b060a..5387a5119326075e88a61353a52c899a72535d07 100644
--- a/src/gpu/GrInOrderDrawBuffer.h
+++ b/src/gpu/GrInOrderDrawBuffer.h
@@ -75,11 +75,16 @@ public:
     // overrides from GrDrawTarget
     virtual bool geometryHints(int* vertexCount,
                                int* indexCount) const SK_OVERRIDE;
+
     virtual void clear(const SkIRect* rect,
                        GrColor color,
                        bool canIgnoreRect,
                        GrRenderTarget* renderTarget) SK_OVERRIDE;
 
+    virtual void clearStencilClip(const SkIRect& rect,
+                                  bool insideClip,
+                                  GrRenderTarget* renderTarget) SK_OVERRIDE;
+
     virtual void discard(GrRenderTarget*) SK_OVERRIDE;
 
     virtual void initCopySurfaceDstDesc(const GrSurface* src, GrTextureDesc* desc) SK_OVERRIDE;
@@ -188,6 +193,21 @@ private:
         GrPendingIOResource<GrRenderTarget, kWrite_GrIOType> fRenderTarget;
     };
 
+    // This command is ONLY used by the clip mask manager to clear the stencil clip bits
+    struct ClearStencilClip : public Cmd {
+        ClearStencilClip(GrRenderTarget* rt) : Cmd(kClear_Cmd), fRenderTarget(rt) {}
+
+        GrRenderTarget* renderTarget() const { return fRenderTarget.get(); }
+
+        virtual void execute(GrDrawTarget*);
+
+        SkIRect fRect;
+        bool    fInsideClip;
+
+    private:
+        GrPendingIOResource<GrRenderTarget, kWrite_GrIOType> fRenderTarget;
+    };
+
     struct CopySurface : public Cmd {
         CopySurface(GrSurface* dst, GrSurface* src) : Cmd(kCopySurface_Cmd), fDst(dst), fSrc(src) {}