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

src/core/SkMaskGamma.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkTypes.h"
 
 #include "SkColor.h"
 #include "SkFloatingPoint.h"
 #include "SkMaskGamma.h"
 
 class SkLinearColorSpaceLuminance : public SkColorSpaceLuminance {
-    virtual SkScalar toLuma(SkScalar SkDEBUGCODE(gamma), SkScalar luminance) const SK_OVERRIDE {
+    SkScalar toLuma(SkScalar SkDEBUGCODE(gamma), SkScalar luminance) const SK_OVERRIDE {
         SkASSERT(SK_Scalar1 == gamma);
         return luminance;
     }
-    virtual SkScalar fromLuma(SkScalar SkDEBUGCODE(gamma), SkScalar luma) const SK_OVERRIDE {
+    SkScalar fromLuma(SkScalar SkDEBUGCODE(gamma), SkScalar luma) const SK_OVERRIDE {
         SkASSERT(SK_Scalar1 == gamma);
         return luma;
     }
 };
 
 class SkGammaColorSpaceLuminance : public SkColorSpaceLuminance {
-    virtual SkScalar toLuma(SkScalar gamma, SkScalar luminance) const SK_OVERRIDE {
+    SkScalar toLuma(SkScalar gamma, SkScalar luminance) const SK_OVERRIDE {
         return SkScalarPow(luminance, gamma);
     }
-    virtual SkScalar fromLuma(SkScalar gamma, SkScalar luma) const SK_OVERRIDE {
+    SkScalar fromLuma(SkScalar gamma, SkScalar luma) const SK_OVERRIDE {
         return SkScalarPow(luma, SkScalarInvert(gamma));
     }
 };
 
 class SkSRGBColorSpaceLuminance : public SkColorSpaceLuminance {
-    virtual SkScalar toLuma(SkScalar SkDEBUGCODE(gamma), SkScalar luminance) const SK_OVERRIDE {
+    SkScalar toLuma(SkScalar SkDEBUGCODE(gamma), SkScalar luminance) const SK_OVERRIDE {
         SkASSERT(0 == gamma);
         //The magic numbers are derived from the sRGB specification.
         //See http://www.color.org/chardata/rgb/srgb.xalter .
         if (luminance <= 0.04045f) {
             return luminance / 12.92f;
         }
         return SkScalarPow((luminance + 0.055f) / 1.055f,
                         2.4f);
     }
-    virtual SkScalar fromLuma(SkScalar SkDEBUGCODE(gamma), SkScalar luma) const SK_OVERRIDE {
+    SkScalar fromLuma(SkScalar SkDEBUGCODE(gamma), SkScalar luma) const SK_OVERRIDE {
         SkASSERT(0 == gamma);
         //The magic numbers are derived from the sRGB specification.
         //See http://www.color.org/chardata/rgb/srgb.xalter .
         if (luma <= 0.0031308f) {
             return luma * 12.92f;
         }
         return 1.055f * SkScalarPow(luma, SkScalarInvert(2.4f))
                - 0.055f;
     }
 };
@@ skipping 59 matching lines @@
             float out = dstConvert.fromLuma(dstGamma, linOut);
 
             //Undo what the blit blend will do.
             float result = (out - dst) / (src - dst);
             SkASSERT(sk_float_round2int(255.0f * result) <= 255);
 
             table[i] = SkToU8(sk_float_round2int(255.0f * result));
         }
     }
 }