fix up virtual / override stuff

src/core/SkBlitter.h

Index: src/core/SkBlitter.h
diff --git a/src/core/SkBlitter.h b/src/core/SkBlitter.h
index b8126c24c6ac05287187d88bf39d49dee0787ebb..a2ab89dc8ac3e46e01d31f41d55b352dcc28c711 100644
--- a/src/core/SkBlitter.h
+++ b/src/core/SkBlitter.h
@@ -136,10 +136,7 @@ public:
     ///@}
 
 protected:
-
     SkAutoMalloc fBlitMemory;
-    
-private:
 };
 
 /** This blitter silently never draws anything.
@@ -147,8 +144,7 @@ private:
 class SkNullBlitter : public SkBlitter {
 public:
     void blitH(int x, int y, int width) override;
-    virtual void blitAntiH(int x, int y, const SkAlpha[],
-                           const int16_t runs[]) override;
+    void blitAntiH(int x, int y, const SkAlpha[], const int16_t runs[]) override;
     void blitV(int x, int y, int height, SkAlpha alpha) override;
     void blitRect(int x, int y, int width, int height) override;
     void blitMask(const SkMask&, const SkIRect& clip) override;
@@ -169,8 +165,7 @@ public:
     }
 
     void blitH(int x, int y, int width) override;
-    virtual void blitAntiH(int x, int y, const SkAlpha[],
-                           const int16_t runs[]) override;
+    void blitAntiH(int x, int y, const SkAlpha[], const int16_t runs[]) override;
     void blitV(int x, int y, int height, SkAlpha alpha) override;
     void blitRect(int x, int y, int width, int height) override;
     virtual void blitAntiRect(int x, int y, int width, int height,
@@ -204,12 +199,11 @@ public:
     }
 
     void blitH(int x, int y, int width) override;
-    virtual void blitAntiH(int x, int y, const SkAlpha[],
-                           const int16_t runs[]) override;
+    void blitAntiH(int x, int y, const SkAlpha[], const int16_t runs[]) override;
     void blitV(int x, int y, int height, SkAlpha alpha) override;
     void blitRect(int x, int y, int width, int height) override;
-    virtual void blitAntiRect(int x, int y, int width, int height,
-                     SkAlpha leftAlpha, SkAlpha rightAlpha) override;
+    void blitAntiRect(int x, int y, int width, int height,
+                      SkAlpha leftAlpha, SkAlpha rightAlpha) override;
     void blitMask(const SkMask&, const SkIRect& clip) override;
     const SkPixmap* justAnOpaqueColor(uint32_t* value) override;