make RRect and Oval first-class drawing primitives in SkCanvas.
add RRect as a first-class clip primitive.
Review URL: https://codereview.appspot.com/6923058

git-svn-id: http://skia.googlecode.com/svn/trunk@6762 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/include/utils/SkNWayCanvas.h b/include/utils/SkNWayCanvas.h
index 065adf0..fcd0ccf 100644
--- a/include/utils/SkNWayCanvas.h
+++ b/include/utils/SkNWayCanvas.h
@@ -34,6 +34,7 @@
     virtual bool concat(const SkMatrix& matrix) SK_OVERRIDE;
     virtual void setMatrix(const SkMatrix& matrix) SK_OVERRIDE;
     virtual bool clipRect(const SkRect&, SkRegion::Op, bool) SK_OVERRIDE;
+    virtual bool clipRRect(const SkRRect&, SkRegion::Op, bool) SK_OVERRIDE;
     virtual bool clipPath(const SkPath&, SkRegion::Op, bool) SK_OVERRIDE;
     virtual bool clipRegion(const SkRegion& deviceRgn,
                             SkRegion::Op) SK_OVERRIDE;
@@ -41,7 +42,9 @@
     virtual void drawPaint(const SkPaint& paint) SK_OVERRIDE;
     virtual void drawPoints(PointMode mode, size_t count, const SkPoint pts[],
                             const SkPaint&) SK_OVERRIDE;
-    virtual void drawRect(const SkRect& rect, const SkPaint&) SK_OVERRIDE;
+    virtual void drawOval(const SkRect&, const SkPaint&) SK_OVERRIDE;
+    virtual void drawRect(const SkRect&, const SkPaint&) SK_OVERRIDE;
+    virtual void drawRRect(const SkRRect&, const SkPaint&) SK_OVERRIDE;
     virtual void drawPath(const SkPath& path, const SkPaint&) SK_OVERRIDE;
     virtual void drawBitmap(const SkBitmap& bitmap, SkScalar left, SkScalar top,
                             const SkPaint*) SK_OVERRIDE;