Move all canvaskit example resources to CDN

Change-Id: I92c83051017648d5703b06daac77e99ff40aeb2e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/273000
Commit-Queue: Nathaniel Nifong <nifong@google.com>
Reviewed-by: Kevin Lubick <kjlubick@google.com>
8 files changed