Use vertex attributes for dash effect in gpu

src/gpu/GrStrokeInfo.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrStrokeInfo_DEFINED
 #define GrStrokeInfo_DEFINED
 
@@ skipping 15 matching lines @@
         if (includeDash) {
             fDashInfo = src.fDashInfo;
             fDashType = src.fDashType;
             fIntervals.reset(src.dashCount());
             memcpy(fIntervals.get(), src.fIntervals.get(), src.dashCount() * sizeof(SkScalar));
         } else {
             fDashType = SkPathEffect::kNone_DashType;
         }
     }
 
+    GrStrokeInfo(const SkPaint& paint, SkPaint::Style styleOverride) :
+        fStroke(paint, styleOverride), fDashType(SkPathEffect::kNone_DashType) {
+        this->init(paint);
+    }
+
+
     explicit GrStrokeInfo(const SkPaint& paint) :
         fStroke(paint), fDashType(SkPathEffect::kNone_DashType) {
-        const SkPathEffect* pe = paint.getPathEffect();
-        this->setDashInfo(pe);
+        this->init(paint);
     }
 
     const SkStrokeRec& getStrokeRec() const { return fStroke; }
 
     SkStrokeRec* getStrokeRecPtr() { return &fStroke; }
 
     void setFillStyle() { fStroke.setFillStyle(); }
 
     /*
      * This functions takes in a patheffect and fills in fDashInfo with the various dashing
@@ skipping 22 matching lines @@
         return fDashInfo.fCount;
     }
 
     void removeDash() {
         fDashType = SkPathEffect::kNone_DashType;
     }
     
     const SkPathEffect::DashInfo& getDashInfo() const { return fDashInfo; }
 
 private:
+
+    void init(const SkPaint& paint) {
+        const SkPathEffect* pe = paint.getPathEffect();
+        this->setDashInfo(pe);
+    }
+
     SkStrokeRec            fStroke;
     SkPathEffect::DashType fDashType;
     SkPathEffect::DashInfo fDashInfo;
     SkAutoSTArray<2, SkScalar> fIntervals;
 };
 
 #endif