make drawText calls non-virtual, to ease SkFont and TextBlob

include/utils/SkNWayCanvas.h

Index: include/utils/SkNWayCanvas.h
diff --git a/include/utils/SkNWayCanvas.h b/include/utils/SkNWayCanvas.h
index 051674b5d036864433873a57c10d652e6fab5aa8..60d51512a5eac2aa029dbafa5fddfab3aa0b8133 100644
--- a/include/utils/SkNWayCanvas.h
+++ b/include/utils/SkNWayCanvas.h
@@ -43,16 +43,6 @@ public:
                                 const SkPaint* paint = NULL) SK_OVERRIDE;
     virtual void drawSprite(const SkBitmap& bitmap, int left, int top,
                             const SkPaint*) SK_OVERRIDE;
-    virtual void drawText(const void* text, size_t byteLength, SkScalar x,
-                          SkScalar y, const SkPaint&) SK_OVERRIDE;
-    virtual void drawPosText(const void* text, size_t byteLength,
-                             const SkPoint pos[], const SkPaint&) SK_OVERRIDE;
-    virtual void drawPosTextH(const void* text, size_t byteLength,
-                              const SkScalar xpos[], SkScalar constY,
-                              const SkPaint&) SK_OVERRIDE;
-    virtual void drawTextOnPath(const void* text, size_t byteLength,
-                                const SkPath& path, const SkMatrix* matrix,
-                                const SkPaint&) SK_OVERRIDE;
     virtual void drawPicture(SkPicture&) SK_OVERRIDE;
     virtual void drawVertices(VertexMode vmode, int vertexCount,
                               const SkPoint vertices[], const SkPoint texs[],
@@ -79,6 +69,14 @@ protected:
     virtual void didSetMatrix(const SkMatrix&) SK_OVERRIDE;
 
     virtual void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) SK_OVERRIDE;
+    virtual void onDrawText(const void* text, size_t byteLength, SkScalar x, SkScalar y,
+                            const SkPaint&) SK_OVERRIDE;
+    virtual void onDrawPosText(const void* text, size_t byteLength, const SkPoint pos[],
+                               const SkPaint&) SK_OVERRIDE;
+    virtual void onDrawPosTextH(const void* text, size_t byteLength, const SkScalar xpos[],
+                                SkScalar constY, const SkPaint&) SK_OVERRIDE;
+    virtual void onDrawTextOnPath(const void* text, size_t byteLength, const SkPath& path,
+                                  const SkMatrix* matrix, const SkPaint&) SK_OVERRIDE;
 
     virtual void onClipRect(const SkRect&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE;
     virtual void onClipRRect(const SkRRect&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE;