Update {virtual,override} to follow C++11 style in src/utils.

src/utils/debugger/SkDebugCanvas.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 "SkColorPriv.h"
@@ skipping 35 matching lines @@
             idx = 10 - (SkColorGetG(dst)+22)/45;
         }
         ++idx;
         SkASSERT(idx < (int)SK_ARRAY_COUNT(gTable));
 
         return gTable[idx];
     }
 
     Factory getFactory() const override { return NULL; }
 #ifndef SK_IGNORE_TO_STRING
-    virtual void toString(SkString* str) const override { str->set("OverdrawXfermode"); }
+    void toString(SkString* str) const override { str->set("OverdrawXfermode"); }
 #endif
 };
 
 class DebugPaintFilterCanvas : public SkPaintFilterCanvas {
 public:
     DebugPaintFilterCanvas(int width, int height, bool overdrawViz, bool overrideFilterQuality,
                            SkFilterQuality quality)
         : INHERITED(width, height)
         , fOverdrawXfermode(overdrawViz ? SkNEW(OverdrawXfermode) : NULL)
         , fOverrideFilterQuality(overrideFilterQuality)
@@ skipping 606 matching lines @@
 }
 
 bool SkDebugCanvas::lastClipStackData(const SkPath& devPath) {
     if (fCalledAddStackData) {
         fClipStackData.appendf("<br>");
         addPathData(devPath, "pathOut");
         return true;
     }
     return false;
 }