Enable distance field path rendering in Chrome.

src/core/SkPictureContentInfo.h

Index: src/core/SkPictureContentInfo.h
diff --git a/src/core/SkPictureContentInfo.h b/src/core/SkPictureContentInfo.h
index d4d1d4fc5f76af0cde01bf59ceb4253f9c13c05e..f255f7df650057a72cd4c92d9713c48ba0783b70 100644
--- a/src/core/SkPictureContentInfo.h
+++ b/src/core/SkPictureContentInfo.h
@@ -60,6 +60,9 @@ private:
     // This field is incremented every time a drawPath call is
     // issued for a hairline stroked concave path.
     int fNumAAHairlineConcavePaths;
+    // This field is incremented every time a drawPath call is
+    // issued for a concave path that can be rendered with distance fields
+    int fNumAADFEligibleConcavePaths;
     // These fields track the different layer flavors. fNumLayers is just
     // a count of all saveLayers, fNumInteriorLayers is the number of layers
     // with a layer inside them, fNumLeafLayers is the number of layers with