Try out refFoo pattern on GrRenderTargetContext

Change-Id: Ifae5618f30c2202b9083f479b58556709ff6126a
Reviewed-on: https://skia-review.googlesource.com/6990
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
diff --git a/src/gpu/SkGpuDevice.cpp b/src/gpu/SkGpuDevice.cpp
index 845b22c..f25c472 100644
--- a/src/gpu/SkGpuDevice.cpp
+++ b/src/gpu/SkGpuDevice.cpp
@@ -129,7 +129,7 @@
     }
     return SkImageInfo::Make(w, h, colorType,
                              opaque ? kOpaque_SkAlphaType : kPremul_SkAlphaType,
-                             sk_ref_sp(context->getColorSpace()));
+                             context->refColorSpace());
 }
 
 SkGpuDevice::SkGpuDevice(GrContext* context, sk_sp<GrRenderTargetContext> renderTargetContext,
@@ -1800,7 +1800,7 @@
                                                    fit,
                                                    cinfo.fInfo.width(), cinfo.fInfo.height(),
                                                    fRenderTargetContext->config(), 
-                                                   sk_ref_sp(fRenderTargetContext->getColorSpace()), 
+                                                   fRenderTargetContext->refColorSpace(), 
                                                    fRenderTargetContext->desc().fSampleCnt, 
                                                    kDefault_GrSurfaceOrigin,
                                                    &props));