add Method param to drawTextOnPath, supporting SVG spec

src/pdf/SkPDFDeviceFlattener.cpp

Index: src/pdf/SkPDFDeviceFlattener.cpp
diff --git a/src/pdf/SkPDFDeviceFlattener.cpp b/src/pdf/SkPDFDeviceFlattener.cpp
index 477486413a2fb2ed8a41b63c888379c2d1742900..bf4a275d9d0efaf86c16c0a22aa6b86de8e86336 100644
--- a/src/pdf/SkPDFDeviceFlattener.cpp
+++ b/src/pdf/SkPDFDeviceFlattener.cpp
@@ -134,12 +134,15 @@ void SkPDFDeviceFlattener::drawPosText(const SkDraw& d, const void* text, size_t
 
 void SkPDFDeviceFlattener::drawTextOnPath(const SkDraw& d, const void* text, size_t len,
                                           const SkPath& path, const SkMatrix* matrix,
+                                          SK_SUPPORT_LEGACY_DRAWTEXTONPATH_PARAM
                                           const SkPaint& paint) {
+    SK_SUPPORT_LEGACY_DRAWTEXTONPATH_DEFAULT_METHOD
     if (mustPathText(d, paint) || (matrix && matrix->hasPerspective())) {
-        d.drawTextOnPath((const char*)text, len, path, matrix, paint);
+        d.drawTextOnPath((const char*)text, len, path, matrix, method, paint);
         return;
     }
-    INHERITED::drawTextOnPath(d, text, len, path, matrix, paint);
+    INHERITED::drawTextOnPath(d, text, len, path, matrix,
+                              SK_SUPPORT_LEGACY_DRAWTEXTONPATH_ARG paint);
 }
 
 bool SkPDFDeviceFlattener::mustFlatten(const SkDraw& d) const {