Rm makeRenderTargetContext in favor of deferred version

Change-Id: Ifdf67453607256ba7cdb0837263377bd83907212
Reviewed-on: https://skia-review.googlesource.com/13001
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
diff --git a/gm/windowrectangles.cpp b/gm/windowrectangles.cpp
index 8110574..544f5e0 100644
--- a/gm/windowrectangles.cpp
+++ b/gm/windowrectangles.cpp
@@ -202,10 +202,10 @@
     const int padRight = (kDeviceRect.right() - kCoverRect.right()) / 2;
     const int padBottom = (kDeviceRect.bottom() - kCoverRect.bottom()) / 2;
     sk_sp<GrRenderTargetContext> maskRTC(
-        ctx->makeRenderTargetContextWithFallback(SkBackingFit::kExact,
-                                                 kCoverRect.width() + padRight,
-                                                 kCoverRect.height() + padBottom,
-                                                 kAlpha_8_GrPixelConfig, nullptr));
+        ctx->makeDeferredRenderTargetContextWithFallback(SkBackingFit::kExact,
+                                                         kCoverRect.width() + padRight,
+                                                         kCoverRect.height() + padBottom,
+                                                         kAlpha_8_GrPixelConfig, nullptr));
     if (!maskRTC ||
         !ctx->resourceProvider()->attachStencilAttachment(maskRTC->accessRenderTarget())) {
         return;