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

src/gpu/SkGpuDevice.cpp

Index: src/gpu/SkGpuDevice.cpp
diff --git a/src/gpu/SkGpuDevice.cpp b/src/gpu/SkGpuDevice.cpp
index 52dc5a7351af856c08d7c88446a74ebc6351f9c3..ca86b84a20ff33985dfe0fddbd5da11b4d9bce99 100644
--- a/src/gpu/SkGpuDevice.cpp
+++ b/src/gpu/SkGpuDevice.cpp
@@ -12,8 +12,7 @@
 
 #include "GrContext.h"
 #include "GrBitmapTextContext.h"
-#include "GrGpu.h"
-#include "GrDrawTargetCaps.h"
+
 #include "SkGrTexturePixelRef.h"
 
 #include "SkColorFilter.h"
@@ -851,6 +850,14 @@ void SkGpuDevice::drawPath(const SkDraw& draw, const SkPath& origSrcPath,
         return;
     }
 
+    // can we cheat, and treat a thin stroke as a hairline w/ coverage
+    // if we can, we draw lots faster (raster device does this same test)
+    SkScalar hairlineCoverage;
+    bool doHairLine = SkDrawTreatAsHairline(paint, fContext->getMatrix(), &hairlineCoverage);
+    if (doHairLine) {
+        grPaint.setCoverage(SkScalarRoundToInt(hairlineCoverage * grPaint.getCoverage()));
+    }
+
     // If we have a prematrix, apply it to the path, optimizing for the case
     // where the original path can in fact be modified in place (even though
     // its parameter type is const).
@@ -880,6 +887,10 @@ void SkGpuDevice::drawPath(const SkDraw& draw, const SkPath& origSrcPath,
         pathPtr = &effectPath;
     }
 
+    if (!pathEffect && doHairLine) {
+        stroke.setHairlineStyle();
+    }
+
     if (paint.getMaskFilter()) {
         if (!stroke.isHairlineStyle()) {
             if (stroke.applyToPath(&tmpPath, *pathPtr)) {