Alter Default & Software path renderers to better handle AA hairline paths

src/gpu/GrDefaultPathRenderer.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrDefaultPathRenderer.h"
 
 #include "GrContext.h"
@@ skipping 495 matching lines @@
     }
     return true;
 }
 
 bool GrDefaultPathRenderer::canDrawPath(const SkPath& path,
                                         const SkStrokeRec& stroke,
                                         const GrDrawTarget* target,
                                         bool antiAlias) const {
     // this class can draw any path with any fill but doesn't do any anti-aliasing.
 
-    return !antiAlias &&
+    return !antiAlias && !(SkPath::kConic_SegmentMask & path.getSegmentMasks()) &&
         (stroke.isFillStyle() ||
          IsStrokeHairlineOrEquivalent(stroke, target->getDrawState().getViewMatrix(), NULL));
 }
 
 bool GrDefaultPathRenderer::onDrawPath(const SkPath& path,
                                        const SkStrokeRec& stroke,
                                        GrDrawTarget* target,
                                        bool antiAlias) {
     return this->internalDrawPath(path,
                                   stroke,
                                   target,
                                   false);
 }
 
 void GrDefaultPathRenderer::onStencilPath(const SkPath& path,
                                           const SkStrokeRec& stroke,
                                           GrDrawTarget* target) {
     SkASSERT(SkPath::kInverseEvenOdd_FillType != path.getFillType());
     SkASSERT(SkPath::kInverseWinding_FillType != path.getFillType());
     this->internalDrawPath(path, stroke, target, true);
 }