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

src/gpu/GrStencilAndCoverPathRenderer.cpp

Index: src/gpu/GrStencilAndCoverPathRenderer.cpp
===================================================================
--- src/gpu/GrStencilAndCoverPathRenderer.cpp	(revision 8359)
+++ src/gpu/GrStencilAndCoverPathRenderer.cpp	(working copy)
@@ -16,7 +16,7 @@
 GrPathRenderer* GrStencilAndCoverPathRenderer::Create(GrContext* context) {
     GrAssert(NULL != context);
     GrAssert(NULL != context->getGpu());
-    if (context->getGpu()->getCaps().pathStencilingSupport()) {
+    if (context->getGpu()->caps()->pathStencilingSupport()) {
         return SkNEW_ARGS(GrStencilAndCoverPathRenderer, (context->getGpu()));
     } else {
         return NULL;
@@ -24,7 +24,7 @@
 }
 
 GrStencilAndCoverPathRenderer::GrStencilAndCoverPathRenderer(GrGpu* gpu) {
-    GrAssert(gpu->getCaps().pathStencilingSupport());
+    GrAssert(gpu->caps()->pathStencilingSupport());
     fGpu = gpu;
     gpu->ref();
 }