Add stroking support to distance field path renderer

src/gpu/batches/GrAADistanceFieldPathRenderer.h

Index: src/gpu/batches/GrAADistanceFieldPathRenderer.h
diff --git a/src/gpu/batches/GrAADistanceFieldPathRenderer.h b/src/gpu/batches/GrAADistanceFieldPathRenderer.h
index 469aeeb981241bce1dd4a34e7440f5ef59d17988..55f49260545cd9c007d133a6430c7aa125be8f00 100755
--- a/src/gpu/batches/GrAADistanceFieldPathRenderer.h
+++ b/src/gpu/batches/GrAADistanceFieldPathRenderer.h
@@ -33,13 +33,27 @@ private:
     bool onDrawPath(const DrawPathArgs&) override;
 
     struct PathData {
-        struct Key {
+       class Key {
+       public:

[robertphillips, 2015/11/19 19:03:28]

Why do we need the default ctor ?

[jvanverth1, 2015/11/19 20:33:23]

Added a comment. It's needed when allocating PathData, since fStroke has no
default constructor.

+           Key() : fStroke(SkStrokeRec::kFill_InitStyle) {}
+           Key(uint32_t genID, uint32_t dim, const SkStrokeRec& stroke)
+               : fGenID(genID)
+               , fDimension(dim)
+               , fStroke(stroke) {
+           }
+           
+           bool operator==(const Key& other) const {
+               return other.fGenID == fGenID && other.fDimension == fDimension &&

[robertphillips, 2015/11/19 19:03:28]

tab this over ?

[jvanverth1, 2015/11/19 20:33:23]

Done.

+               fStroke.hasEqualEffect(other.fStroke);
+           }
+           
+       private:
             uint32_t   fGenID;
             // rendered size for stored path (32x32 max, 64x64 max, 128x128 max)
             uint32_t   fDimension;
-            bool operator==(const Key& other) const {
-                return other.fGenID == fGenID && other.fDimension == fDimension;
-            }
+            // stroking information
+            SkStrokeRec fStroke;

[robertphillips, 2015/11/19 19:03:28]

extra \n ?

[jvanverth1, 2015/11/19 20:33:23]

Done.

+            
         };
         Key                   fKey;
         SkScalar              fScale;