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

include/effects/SkLumaColorFilter.h

Index: include/effects/SkLumaColorFilter.h
diff --git a/include/effects/SkLumaColorFilter.h b/include/effects/SkLumaColorFilter.h
index ae666c0bcaf439490db740f8299fec1ef7f46b3d..c7bb2db8bc2bba8569603727a1160fac1a47d099 100644
--- a/include/effects/SkLumaColorFilter.h
+++ b/include/effects/SkLumaColorFilter.h
@@ -25,17 +25,17 @@ class SK_API SkLumaColorFilter : public SkColorFilter {
 public:
     static SkColorFilter* Create();
 
-    virtual void filterSpan(const SkPMColor src[], int count, SkPMColor[]) const SK_OVERRIDE;
+    void filterSpan(const SkPMColor src[], int count, SkPMColor[]) const SK_OVERRIDE;
 
 #if SK_SUPPORT_GPU
-    virtual GrFragmentProcessor* asFragmentProcessor(GrContext*) const SK_OVERRIDE;
+    GrFragmentProcessor* asFragmentProcessor(GrContext*) const SK_OVERRIDE;
 #endif
 
     SK_TO_STRING_OVERRIDE()
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkLumaColorFilter)
 
 protected:
-    virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
+    void flatten(SkWriteBuffer&) const SK_OVERRIDE;
 
 private:
     SkLumaColorFilter();