Make ANGLE SampleApp work again

The code in views and samplecode wasn't being compiled in. Expand the
scope of the SK_ANGLE define to fix that. Add some missing deps too.

BUG=skia:

Change-Id: Id7b584457a21f171efc2339fb969c550379295e5
Reviewed-on: https://skia-review.googlesource.com/5575
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
2 files changed