Do not apply hairline optimization for paths if nv_path_rendering is used

src/gpu/GrDrawState.h

Index: src/gpu/GrDrawState.h
diff --git a/src/gpu/GrDrawState.h b/src/gpu/GrDrawState.h
index 2e4d7f86c44397598192d3f2567965dac21e3b25..3de0b12e8593164cda09d74e851487c8c0d5e878 100644
--- a/src/gpu/GrDrawState.h
+++ b/src/gpu/GrDrawState.h
@@ -311,15 +311,11 @@ public:
         fCommon.fCoverage = GrColorPackRGBA(coverage, coverage, coverage, coverage);
     }
 
-    /**
-     * Version of above that specifies 4 channel per-vertex color. The value
-     * should be premultiplied.
-     */
-    void setCoverage4(GrColor coverage) {
-        fCommon.fCoverage = coverage;
+    uint8_t getCoverage() const {
+        return GrColorUnpackR(fCommon.fCoverage);
     }
 
-    GrColor getCoverage() const {
+    GrColor getCoverageColor() const {
         return fCommon.fCoverage;
     }