Set resScale on stroker when stroking path on gpu.

src/core/SkStrokeRec.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkStrokeRec.h"
 #include "SkPaintDefaults.h"
 
@@ skipping 80 matching lines @@
 void SkStrokeRec::setStrokeStyle(SkScalar width, bool strokeAndFill) {
     if (strokeAndFill && (0 == width)) {
         // hairline+fill == fill
         this->setFillStyle();
     } else {
         fWidth = width;
         fStrokeAndFill = strokeAndFill;
     }
 }
 
+void SkStrokeRec::setResScale(SkScalar rs) {
+    SkASSERT(rs > 0 && SkScalarIsFinite(rs));
+    fResScale = rs;
+}
+
 #include "SkStroke.h"
 
 #if !defined SK_LEGACY_STROKE_CURVES && defined SK_DEBUG  
     // enables tweaking these values at runtime from SampleApp
     bool gDebugStrokerErrorSet = false;
     SkScalar gDebugStrokerError;
 #endif
 
 bool SkStrokeRec::applyToPath(SkPath* dst, const SkPath& src) const {
     if (fWidth <= 0) {  // hairline or fill
@@ skipping 20 matching lines @@
         paint->setStyle(SkPaint::kFill_Style);
         return;
     }
 
     paint->setStyle(fStrokeAndFill ? SkPaint::kStrokeAndFill_Style : SkPaint::kStroke_Style);
     paint->setStrokeWidth(fWidth);
     paint->setStrokeMiter(fMiterLimit);
     paint->setStrokeCap(fCap);
     paint->setStrokeJoin(fJoin);
 }