add Method param to drawTextOnPath, supporting SVG spec

src/pipe/SkGPipeRead.cpp

Index: src/pipe/SkGPipeRead.cpp
diff --git a/src/pipe/SkGPipeRead.cpp b/src/pipe/SkGPipeRead.cpp
index 7684b7204992205e4739f33b7b90fe307024c616..a00bebe466541ae1d010d7bfac517bb5f2038c8a 100644
--- a/src/pipe/SkGPipeRead.cpp
+++ b/src/pipe/SkGPipeRead.cpp
@@ -519,8 +519,9 @@ static void drawTextOnPath_rp(SkCanvas* canvas, SkReader32* reader, uint32_t op3
         reader->readMatrix(&matrixStorage);
         matrix = &matrixStorage;
     }
+    SkCanvas::TextOnPathMethod method = (SkCanvas::TextOnPathMethod)reader->readInt();
     if (state->shouldDraw()) {
-        canvas->drawTextOnPath(text, len, path, matrix, state->paint());
+        canvas->drawTextOnPath(text, len, path, matrix, method, state->paint());
     }
 }