add Method param to drawTextOnPath, supporting SVG spec

src/utils/SkDeferredCanvas.cpp

Index: src/utils/SkDeferredCanvas.cpp
diff --git a/src/utils/SkDeferredCanvas.cpp b/src/utils/SkDeferredCanvas.cpp
index 7da85327167b1d7823a681378051f4bd02579928..8811a4c9cc4325ee08f23c1fafb4f89200bd6be4 100644
--- a/src/utils/SkDeferredCanvas.cpp
+++ b/src/utils/SkDeferredCanvas.cpp
@@ -209,9 +209,8 @@ protected:
                              const SkScalar pos[], int scalarsPerPos,
                              const SkPoint& offset, const SkPaint& paint) SK_OVERRIDE
         {SkASSERT(0);}
-    virtual void drawTextOnPath(const SkDraw&, const void* text,
-                                size_t len, const SkPath& path,
-                                const SkMatrix* matrix,
+    virtual void drawTextOnPath(const SkDraw&, const void* text, size_t len, const SkPath& path,
+                                const SkMatrix* matrix, SK_SUPPORT_LEGACY_DRAWTEXTONPATH_PARAM
                                 const SkPaint& paint) SK_OVERRIDE
         {SkASSERT(0);}
     virtual void drawVertices(const SkDraw&, SkCanvas::VertexMode,
@@ -892,9 +891,11 @@ void SkDeferredCanvas::onDrawPosTextH(const void* text, size_t byteLength, const
 }
 
 void SkDeferredCanvas::onDrawTextOnPath(const void* text, size_t byteLength, const SkPath& path,
-                                        const SkMatrix* matrix, const SkPaint& paint) {
+                                        const SkMatrix* matrix,
+                                      SK_SUPPORT_LEGACY_DRAWTEXTONPATH_PARAM const SkPaint& paint) {
     AutoImmediateDrawIfNeeded autoDraw(*this, &paint);
-    this->drawingCanvas()->drawTextOnPath(text, byteLength, path, matrix, paint);
+    this->drawingCanvas()->drawTextOnPath(text, byteLength, path, matrix,
+                                          SK_SUPPORT_LEGACY_DRAWTEXTONPATH_ARG paint);
     this->recordedDrawCommand();
 }