Enable distance field path rendering in Chrome.

src/core/SkPictureContentInfo.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 SkPictureContentInfo_DEFINED
 #define SkPictureContentInfo_DEFINED
 
@@ skipping 42 matching lines @@
     int fNumPaintWithPathEffectUses;
     // This field is incremented every time a paint with a path effect that is
     // dashed, we are drawing a line, and we can use the gpu fast path
     int fNumFastPathDashEffects;
     // This field is incremented every time an anti-aliased drawPath call is
     // issued with a concave path
     int fNumAAConcavePaths;
     // 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
     // no layer inside them.
     int fNumLayers;
     int fNumInteriorLayers;
     int fNumLeafLayers;
 
     enum Flags {
         kSave_Flag      = 0x1,
         kSaveLayer_Flag = 0x2,
 
         // Did the current save or saveLayer contain another saveLayer.
         // Percolated back down the save stack.
         kContainedSaveLayer_Flag = 0x4
     };
 
     // Stack of save vs saveLayer information to track nesting
     SkTDArray<uint32_t> fSaveStack;
 };
 
 #endif