Revert "Do not apply hairline optimization for paths if nv_path_rendering is used"

src/core/SkDraw.cpp

Index: src/core/SkDraw.cpp
diff --git a/src/core/SkDraw.cpp b/src/core/SkDraw.cpp
index 826c4ba12cea061a7a3b9f1ae5e0431e57f7a753..af4f1ca0474fdecee56f137092f606cf31317133 100644
--- a/src/core/SkDraw.cpp
+++ b/src/core/SkDraw.cpp
@@ -987,12 +987,24 @@ static bool xfermodeSupportsCoverageAsAlpha(SkXfermode* xfer) {
     }
 }
 
-bool SkDrawTreatAAStrokeAsHairline(SkScalar strokeWidth, const SkMatrix& matrix,
-                                   SkScalar* coverage) {
+bool SkDrawTreatAsHairline(const SkPaint& paint, const SkMatrix& matrix,
+                           SkScalar* coverage) {
     SkASSERT(coverage);
-    SkASSERT(strokeWidth > 0);
-    // We need to try to fake a thick-stroke with a modulated hairline.
+    if (SkPaint::kStroke_Style != paint.getStyle()) {
+        return false;
+    }
+    SkScalar strokeWidth = paint.getStrokeWidth();
+    if (0 == strokeWidth) {
+        *coverage = SK_Scalar1;
+        return true;
+    }
 
+    // if we get here, we need to try to fake a thick-stroke with a modulated
+    // hairline
+
+    if (!paint.isAntiAlias()) {
+        return false;
+    }
     if (matrix.hasPerspective()) {
         return false;
     }