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

dm/DMGpuGMTask.h

Index: dm/DMGpuGMTask.h
diff --git a/dm/DMGpuGMTask.h b/dm/DMGpuGMTask.h
index 553436d040c3ec5527e20e8a48354ddacbd0a48d..87436d39f528e74078099c7a969d2bed7edd9347 100644
--- a/dm/DMGpuGMTask.h
+++ b/dm/DMGpuGMTask.h
@@ -25,9 +25,9 @@ public:
               int sampleCount,
               bool useDFText);
 
-    virtual void draw(GrContextFactory*) SK_OVERRIDE;
-    virtual bool shouldSkip() const SK_OVERRIDE;
-    virtual SkString name() const SK_OVERRIDE { return fName; }
+    void draw(GrContextFactory*) SK_OVERRIDE;
+    bool shouldSkip() const SK_OVERRIDE;
+    SkString name() const SK_OVERRIDE { return fName; }
 
 private:
     SkAutoTDelete<skiagm::GM> fGM;