Update more example code to GrDirectContext/GrRecordingContext pair

Change-Id: Ic12b8292a09be097e99d2dc912d6d5188e645fbd
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/307299
Reviewed-by: Adlai Holler <adlai@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
14 files changed