fix the rendering error for drawPosText_asPaths

src/core/SkDraw.cpp

Index: src/core/SkDraw.cpp
diff --git a/src/core/SkDraw.cpp b/src/core/SkDraw.cpp
index 24c80557168c8019adfb54f62e361520960b2c15..dc4a4a40bb887350ba771b38a3a6674b837db1b8 100644
--- a/src/core/SkDraw.cpp
+++ b/src/core/SkDraw.cpp
@@ -1900,6 +1900,18 @@ void SkDraw::drawPosText_asPaths(const char text[], size_t byteLength,
     SkAutoGlyphCache    autoCache(paint, NULL, NULL);
     SkGlyphCache*       cache = autoCache.getCache();
 
+    // After SkGlyphCache is detached, the path effect should be set to NULL in
+    // SkPaint. And the path for text will be filled, so SkPaint should be set
+    // to fill style, w/ the exception of hairline stroked text w/o path effect.
+    if (origPaint.getStyle() == SkPaint::kStroke_Style &&
+        origPaint.getStrokeWidth() == 0 && origPaint.getPathEffect() == NULL) {
+        paint.setStyle(SkPaint::kStroke_Style);
+    } else {
+        paint.setStyle(SkPaint::kFill_Style);
+    }
+
+    paint.setPathEffect(NULL);
+
     const char*        stop = text + byteLength;
     AlignProc_scalar   alignProc = pick_align_proc_scalar(paint.getTextAlign());
     TextMapState       tms(SkMatrix::I(), constY);