Fix up all the easy virtual ... SK_OVERRIDE cases.

include/effects/SkPerlinNoiseShader.h

Index: include/effects/SkPerlinNoiseShader.h
diff --git a/include/effects/SkPerlinNoiseShader.h b/include/effects/SkPerlinNoiseShader.h
index 3d37de80dd1b42043c07f0d85ad64addad267d56..b318ef1cd0e3045b0d8deb117a20b39e086b2f39 100644
--- a/include/effects/SkPerlinNoiseShader.h
+++ b/include/effects/SkPerlinNoiseShader.h
@@ -72,15 +72,15 @@ public:
     }
 
 
-    virtual size_t contextSize() const SK_OVERRIDE;
+    size_t contextSize() const SK_OVERRIDE;
 
     class PerlinNoiseShaderContext : public SkShader::Context {
     public:
         PerlinNoiseShaderContext(const SkPerlinNoiseShader& shader, const ContextRec&);
         virtual ~PerlinNoiseShaderContext();
 
-        virtual void shadeSpan(int x, int y, SkPMColor[], int count) SK_OVERRIDE;
-        virtual void shadeSpan16(int x, int y, uint16_t[], int count) SK_OVERRIDE;
+        void shadeSpan(int x, int y, SkPMColor[], int count) SK_OVERRIDE;
+        void shadeSpan16(int x, int y, uint16_t[], int count) SK_OVERRIDE;
 
     private:
         SkPMColor shade(const SkPoint& point, StitchData& stitchData) const;
@@ -104,8 +104,8 @@ public:
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkPerlinNoiseShader)
 
 protected:
-    virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
-    virtual Context* onCreateContext(const ContextRec&, void* storage) const SK_OVERRIDE;
+    void flatten(SkWriteBuffer&) const SK_OVERRIDE;
+    Context* onCreateContext(const ContextRec&, void* storage) const SK_OVERRIDE;
 
 private:
     SkPerlinNoiseShader(SkPerlinNoiseShader::Type type, SkScalar baseFrequencyX,