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

gm/cubicpaths.cpp

Index: gm/cubicpaths.cpp
diff --git a/gm/cubicpaths.cpp b/gm/cubicpaths.cpp
index 9c6cffbdb36750d86ee968bef03d4c79cbf95e09..bf05db784510a4173129506fca00e10c94be1c39 100644
--- a/gm/cubicpaths.cpp
+++ b/gm/cubicpaths.cpp
@@ -16,7 +16,7 @@ public:
     ClippedCubicGM() {}
 
 protected:
-    virtual uint32_t onGetFlags() const SK_OVERRIDE {
+    uint32_t onGetFlags() const SK_OVERRIDE {
         return kSkipTiled_Flag;
     }
 
@@ -59,7 +59,7 @@ public:
     CubicPathGM() {}
 
 protected:
-    virtual uint32_t onGetFlags() const SK_OVERRIDE {
+    uint32_t onGetFlags() const SK_OVERRIDE {
         return kSkipTiled_Flag;
     }
 
@@ -208,7 +208,7 @@ public:
     CubicClosePathGM() {}
 
 protected:
-    virtual uint32_t onGetFlags() const SK_OVERRIDE {
+    uint32_t onGetFlags() const SK_OVERRIDE {
         return kSkipTiled_Flag;
     }