Remove a lot of Widget APIs.

Remove a lot of Widget APIs.

We don't need a lot of the Widget API. I also removed the
visibility code which seems to have been broken when we
removed FrameView::show and hide(), which looks like it
would have broken image loading. Unfortuantely we don't
have pixel tests or tests that load images so I can't
test this yet. Even so it's a good simplificatin since
our system has no concept of hidden widgets.

R=abarth@chromium.org, ojan@chromium.org

Committed: https://chromium.googlesource.com/external/mojo/+/211019e18c87ef47ad1708cce20cf66951118a40

[abarth-chromium, 2014-10-29 16:49:17]

abarth@chromium.org changed reviewers:
+ abarth@chromium.org

[abarth-chromium, 2014-10-29 16:49:17]

lgtm

https://codereview.chromium.org/691453002/diff/1/sky/engine/core/rendering/Re...
File sky/engine/core/rendering/RenderObject.cpp (right):

https://codereview.chromium.org/691453002/diff/1/sky/engine/core/rendering/Re...
sky/engine/core/rendering/RenderObject.cpp:2572: return
!document().activeDOMObjectsAreSuspended();
active DOM object cannot ever be suspended in Sky.

[esprehn, 2014-10-29 22:23:15]

Committed patchset #1 (id:1) manually as
211019e18c87ef47ad1708cce20cf66951118a40.