Rename existing SkRecorder -> SkRecordCanvas

We are going to want a public class named SkRecorder for some of our
refactorings of the CPU backend. This will disambiguate them.

Change-Id: I4851c856182145d1b969e7c13a858745440a7364
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/979896
Auto-Submit: Kaylee Lubick <kjlubick@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
15 files changed