Move some of the adding stencil attachment logic of Gpu and into Render Target.

src/gpu/GrDrawContext.cpp

Index: src/gpu/GrDrawContext.cpp
diff --git a/src/gpu/GrDrawContext.cpp b/src/gpu/GrDrawContext.cpp
index 3d3be749d0668b5f95dadc6a01b629c738c0f934..94fcee03134a375d00b199440c4aac10ac7b1518 100644
--- a/src/gpu/GrDrawContext.cpp
+++ b/src/gpu/GrDrawContext.cpp
@@ -63,7 +63,8 @@ GrTextContext* GrDrawContext::createTextContext(GrRenderTarget* renderTarget,
     if (fContext->caps()->shaderCaps()->pathRenderingSupport() &&
         renderTarget->isStencilBufferMultisampled() &&
         fSurfaceProps.isUseDeviceIndependentFonts()) {
-        GrStencilAttachment* sb = renderTarget->renderTargetPriv().attachStencilAttachment();
+        GrStencilAttachment* sb =
+            fContext->resourceProvider()->attachStencilAttachment(renderTarget);
         if (sb) {
             return GrStencilAndCoverTextContext::Create(fContext, surfaceProps);
         }