add Method param to drawTextOnPath, supporting SVG spec

src/gpu/SkGpuDevice.cpp

Index: src/gpu/SkGpuDevice.cpp
diff --git a/src/gpu/SkGpuDevice.cpp b/src/gpu/SkGpuDevice.cpp
index 8912851d8f369c88a9b36aeb7d281c8b2490c690..c757721b9ba7892530ad4c2631d2fa6ae56626d9 100644
--- a/src/gpu/SkGpuDevice.cpp
+++ b/src/gpu/SkGpuDevice.cpp
@@ -1778,11 +1778,13 @@ void SkGpuDevice::drawPosText(const SkDraw& draw, const void* text, size_t byteL
 
 void SkGpuDevice::drawTextOnPath(const SkDraw& draw, const void* text,
                                  size_t len, const SkPath& path,
-                                 const SkMatrix* m, const SkPaint& paint) {
+                                 const SkMatrix* m,
+                                 SK_SUPPORT_LEGACY_DRAWTEXTONPATH_PARAM const SkPaint& paint) {
     CHECK_SHOULD_DRAW(draw);
 
+    SK_SUPPORT_LEGACY_DRAWTEXTONPATH_DEFAULT_METHOD
     SkASSERT(draw.fDevice == this);
-    draw.drawTextOnPath((const char*)text, len, path, m, paint);
+    draw.drawTextOnPath((const char*)text, len, path, m, method, paint);
 }
 
 ///////////////////////////////////////////////////////////////////////////////