add Method param to drawTextOnPath, supporting SVG spec

src/utils/debugger/SkDebugCanvas.cpp

Index: src/utils/debugger/SkDebugCanvas.cpp
diff --git a/src/utils/debugger/SkDebugCanvas.cpp b/src/utils/debugger/SkDebugCanvas.cpp
index aed87cc22120e4e03f3e6af004ddebe8c9f638b5..4ce951032d255dd0bef4cd6e87907e49055fc12d 100644
--- a/src/utils/debugger/SkDebugCanvas.cpp
+++ b/src/utils/debugger/SkDebugCanvas.cpp
@@ -495,7 +495,9 @@ void SkDebugCanvas::onDrawText(const void* text, size_t byteLength, SkScalar x,
 }
 
 void SkDebugCanvas::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) {
+    // TODO: update command to include Method
     this->addDrawCommand(
         new SkDrawTextOnPathCommand(text, byteLength, path, matrix, paint));
 }