Remove a huge pile of views code

All of this is dead when not using the old SkWindow framework.

TBR=reed@google.com

Bug: skia:
Change-Id: I0f6ab18987a98469bfd367d5bc10967300dfd3ca
Reviewed-on: https://skia-review.googlesource.com/75384
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
47 files changed