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

dm/DMPDFRasterizeTask.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef DMPDFRasterizeTask_DEFINED
 #define DMPDFRasterizeTask_DEFINED
 
 #include "DMTask.h"
 #include "SkBitmap.h"
 #include "SkData.h"
 #include "SkStream.h"
 #include "SkString.h"
 #include "SkTemplates.h"
 
 namespace DM {
 
 typedef bool (*RasterizePdfProc)(SkStream* pdf, SkBitmap* output);
 
 class PDFRasterizeTask : public CpuTask {
 public:
     // takes ownership of SkStreamAsset.
     PDFRasterizeTask(const Task& parent,
                      SkStreamAsset* pdf,
                      RasterizePdfProc);
 
-    virtual void draw() SK_OVERRIDE;
-    virtual bool shouldSkip() const SK_OVERRIDE { return NULL == fRasterize; }
-    virtual SkString name()   const SK_OVERRIDE { return fName; }
+    void draw() SK_OVERRIDE;
+    bool shouldSkip() const SK_OVERRIDE { return NULL == fRasterize; }
+    SkString name()   const SK_OVERRIDE { return fName; }
 
 private:
     const SkString fName;
     SkAutoTDelete<SkStreamAsset> fPdf;
     RasterizePdfProc fRasterize;
 };
 
 }  // namespace DM
 
 #endif  // DMPDFRasterizeTask_DEFINED