hide virtuals on device for width/height/isopaque

include/core/SkBitmapDevice.h

Index: include/core/SkBitmapDevice.h
diff --git a/include/core/SkBitmapDevice.h b/include/core/SkBitmapDevice.h
index 48b0386dc20bb08391c4ffcaa34242bcac044c46..cc6d2adc6c81be2cadc41f7d1d4d7285a388ae07 100644
--- a/include/core/SkBitmapDevice.h
+++ b/include/core/SkBitmapDevice.h
@@ -33,18 +33,6 @@ public:
     static SkBitmapDevice* Create(const SkImageInfo&,
                                   const SkDeviceProperties* = NULL);
 
-    /** Return the width of the device (in pixels).
-    */
-    virtual int width() const SK_OVERRIDE { return fBitmap.width(); }
-    /** Return the height of the device (in pixels).
-    */
-    virtual int height() const SK_OVERRIDE { return fBitmap.height(); }
-
-    /** Returns true if the device's bitmap's config treats every pixels as
-        implicitly opaque.
-    */
-    virtual bool isOpaque() const SK_OVERRIDE { return fBitmap.isOpaque(); }
-
     virtual SkImageInfo imageInfo() const SK_OVERRIDE;
 
     /**