Make sure path computed from stroke-rec application using GrStyle is volatile.

src/gpu/GrStyle.cpp

Index: src/gpu/GrStyle.cpp
diff --git a/src/gpu/GrStyle.cpp b/src/gpu/GrStyle.cpp
index 10a0debe4e4dcf9b9078bbdaaef787042eede440..43718db97f3eade05336ee695e93f06ed39ffa23 100644
--- a/src/gpu/GrStyle.cpp
+++ b/src/gpu/GrStyle.cpp
@@ -178,6 +178,7 @@ bool GrStyle::applyToPath(SkPath* dst, SkStrokeRec::InitStyle* style, const SkPa
         if (!strokeRec.applyToPath(dst, *pathForStrokeRec)) {
             return false;
         }
+        dst->setIsVolatile(true);
         *style = SkStrokeRec::kFill_InitStyle;
     } else if (!fPathEffect) {
         // Nothing to do for path effect or stroke, fail.