Fix SkTextBlob offset semantics.

src/utils/SkPictureUtils.cpp

Index: src/utils/SkPictureUtils.cpp
diff --git a/src/utils/SkPictureUtils.cpp b/src/utils/SkPictureUtils.cpp
index 4f4d2bf30a9294be4211a1c9dbb54c4eef29c02b..391e5ffc795d290b49a3920610b116c8dc89c388 100644
--- a/src/utils/SkPictureUtils.cpp
+++ b/src/utils/SkPictureUtils.cpp
@@ -132,8 +132,8 @@ public:
         this->addBitmapFromPaint(paint);
     }
     virtual void drawPosText(const SkDraw&, const void* text, size_t len,
-                             const SkScalar pos[], SkScalar constY,
-                             int, const SkPaint& paint) SK_OVERRIDE {
+                             const SkScalar pos[], int,
+                             const SkPoint&, const SkPaint& paint) SK_OVERRIDE {
         this->addBitmapFromPaint(paint);
     }
     virtual void drawTextOnPath(const SkDraw&, const void* text, size_t len,