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

dm/DMPDFRasterizeTask.h

Index: dm/DMPDFRasterizeTask.h
diff --git a/dm/DMPDFRasterizeTask.h b/dm/DMPDFRasterizeTask.h
index 72319503c79debab937f888108e239dda1aaee0d..8148499061cd4e1c5f13bcf2b061a8d4d74c1d75 100644
--- a/dm/DMPDFRasterizeTask.h
+++ b/dm/DMPDFRasterizeTask.h
@@ -26,9 +26,9 @@ public:
                      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;