Hide GrDrawTarget::Caps's member vars

Review URL: https://codereview.appspot.com/6499044



git-svn-id: http://skia.googlecode.com/svn/trunk@5328 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/GrAAConvexPathRenderer.cpp b/src/gpu/GrAAConvexPathRenderer.cpp
index 718cfdd..8169508 100644
--- a/src/gpu/GrAAConvexPathRenderer.cpp
+++ b/src/gpu/GrAAConvexPathRenderer.cpp
@@ -434,7 +434,7 @@
                                          GrPathFill fill,
                                          const GrDrawTarget* target,
                                          bool antiAlias) const {
-    if (!target->getCaps().fShaderDerivativeSupport || !antiAlias ||
+    if (!target->getCaps().shaderDerivativeSupport() || !antiAlias ||
         kHairLine_GrPathFill == fill || GrIsFillInverted(fill) ||
         !path.isConvex()) {
         return false;