Make GrDrawTarget::Caps ref counted and GrGLCaps derive from it.

src/gpu/GrPathRendererChain.cpp

Index: src/gpu/GrPathRendererChain.cpp
===================================================================
--- src/gpu/GrPathRendererChain.cpp	(revision 8359)
+++ src/gpu/GrPathRendererChain.cpp	(working copy)
@@ -79,8 +79,8 @@
 void GrPathRendererChain::init() {
     GrAssert(!fInit);
     GrGpu* gpu = fOwner->getGpu();
-    bool twoSided = gpu->getCaps().twoSidedStencilSupport();
-    bool wrapOp = gpu->getCaps().stencilWrapOpsSupport();
+    bool twoSided = gpu->caps()->twoSidedStencilSupport();
+    bool wrapOp = gpu->caps()->stencilWrapOpsSupport();
     GrPathRenderer::AddPathRenderers(fOwner, this);
     this->addPathRenderer(SkNEW_ARGS(GrDefaultPathRenderer,
                                      (twoSided, wrapOp)))->unref();