Simplify parameters passed to path renderers

src/gpu/GrAAHairLinePathRenderer.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 "GrAAHairLinePathRenderer.h"
 
 #include "GrBatchTarget.h"
@@ skipping 609 matching lines @@
 bool GrAAHairLinePathRenderer::onCanDrawPath(const CanDrawPathArgs& args) const {
     if (!args.fAntiAlias) {
         return false;
     }
 
     if (!IsStrokeHairlineOrEquivalent(*args.fStroke, *args.fViewMatrix, NULL)) {
         return false;
     }
 
     if (SkPath::kLine_SegmentMask == args.fPath->getSegmentMasks() ||
-        args.fTarget->caps()->shaderCaps()->shaderDerivativeSupport()) {
+        args.fShaderCaps->shaderDerivativeSupport()) {
         return true;
     }
     return false;
 }
 
 template <class VertexType>
 bool check_bounds(const SkMatrix& viewMatrix, const SkRect& devBounds, void* vertices, int vCount)
 {
     SkRect tolDevBounds = devBounds;
     // The bounds ought to be tight, but in perspective the below code runs the verts
@@ skipping 349 matching lines @@
     GrColor color = GrRandomColor(random);
     SkMatrix viewMatrix = GrTest::TestMatrix(random);
     GrStrokeInfo stroke(SkStrokeRec::kHairline_InitStyle);
     SkPath path = GrTest::TestPath(random);
     SkIRect devClipBounds;
     devClipBounds.setEmpty();
     return create_hairline_batch(color, viewMatrix, path, stroke, devClipBounds);
 }
 
 #endif