Reland "Remove use of legacy display globals."

This is a reland of c1916c34febe0c6f9805b5d9fc18349ec8b74008

As it turns out, benches are not always given a canvas.

Original change's description:
> Remove use of legacy display globals.
>
> In the ongoing effort to remove the display globals from Skia, allow
> their use only if SK_LEGACY_SURFACE_PROPS is defined. Do not define this
> in a normal Skia build and remove all use from Skia code.
>
> Change-Id: I9ff550f5db246b9024aac687a1bc01321f1be4c8
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/319343
> Reviewed-by: Herb Derby <herb@google.com>
> Commit-Queue: Ben Wagner <bungeman@google.com>

Change-Id: I61a2ac058fafc99653e3304876cf4b97350dac8b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/322490
Reviewed-by: Ben Wagner <bungeman@google.com>
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
diff --git a/example/SkiaSDLExample.cpp b/example/SkiaSDLExample.cpp
index 95c0828..793416f 100644
--- a/example/SkiaSDLExample.cpp
+++ b/example/SkiaSDLExample.cpp
@@ -229,8 +229,8 @@
     // setup SkSurface
     // To use distance field text, use commented out SkSurfaceProps instead
     // SkSurfaceProps props(SkSurfaceProps::kUseDeviceIndependentFonts_Flag,
-    //                      SkSurfaceProps::kLegacyFontHost_InitType);
-    SkSurfaceProps props(SkSurfaceProps::kLegacyFontHost_InitType);
+    //                      SkSurfaceProps::kUnknown_SkPixelGeometry);
+    SkSurfaceProps props;
 
     sk_sp<SkSurface> surface(SkSurface::MakeFromBackendRenderTarget(grContext.get(), target,
                                                                     kBottomLeft_GrSurfaceOrigin,