add Method param to drawTextOnPath, supporting SVG spec

samplecode/SampleAll.cpp

Index: samplecode/SampleAll.cpp
diff --git a/samplecode/SampleAll.cpp b/samplecode/SampleAll.cpp
index 16c79c9dbfe3bb2b5e7f53cf3aa6b402cf5f6f6f..baaa32de3d054fb7f8c87c3289e064f7f1fa83c2 100644
--- a/samplecode/SampleAll.cpp
+++ b/samplecode/SampleAll.cpp
@@ -472,9 +472,11 @@ protected:
         paint.setColor(SK_ColorMAGENTA);
         paint.setTextEncoding(SkPaint::kUTF16_TextEncoding);
         matrix.setTranslate(SkIntToScalar(10), SkIntToScalar(10));
-        canvas->drawTextOnPath((void*) utf16, sizeof(utf16), path, &matrix, paint);
+        canvas->drawTextOnPath((void*) utf16, sizeof(utf16), path, &matrix,
+                               SkCanvas::kStretch_TextOnPathMethod, paint);
         canvas->translate(0, SkIntToScalar(20));
-        canvas->drawTextOnPath((void*) utf16simple, sizeof(utf16simple), path, &matrix, paint);
+        canvas->drawTextOnPath((void*) utf16simple, sizeof(utf16simple), path, &matrix,
+                               SkCanvas::kStretch_TextOnPathMethod, paint);
         canvas->restore();
 
         canvas->translate(0, SkIntToScalar(60));