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

src/image/SkSurface_Gpu.h

Index: src/image/SkSurface_Gpu.h
diff --git a/src/image/SkSurface_Gpu.h b/src/image/SkSurface_Gpu.h
index a02eb3e90402ee09a27107fdb6c0333749f9cd18..4a49272d3afec3aa034f8f83882089b2065431c0 100644
--- a/src/image/SkSurface_Gpu.h
+++ b/src/image/SkSurface_Gpu.h
@@ -21,13 +21,13 @@ public:
     SkSurface_Gpu(GrRenderTarget*, const SkSurfaceProps*, bool doClear);
     virtual ~SkSurface_Gpu();
 
-    virtual SkCanvas* onNewCanvas() SK_OVERRIDE;
-    virtual SkSurface* onNewSurface(const SkImageInfo&) SK_OVERRIDE;
-    virtual SkImage* onNewImageSnapshot() SK_OVERRIDE;
+    SkCanvas* onNewCanvas() SK_OVERRIDE;
+    SkSurface* onNewSurface(const SkImageInfo&) SK_OVERRIDE;
+    SkImage* onNewImageSnapshot() SK_OVERRIDE;
     virtual void onDraw(SkCanvas*, SkScalar x, SkScalar y,
                         const SkPaint*) SK_OVERRIDE;
-    virtual void onCopyOnWrite(ContentChangeMode) SK_OVERRIDE;
-    virtual void onDiscard() SK_OVERRIDE;
+    void onCopyOnWrite(ContentChangeMode) SK_OVERRIDE;
+    void onDiscard() SK_OVERRIDE;
 
     SkGpuDevice* getDevice() { return fDevice; }