Removed ScrollingCoordinator and a bunch of composited scrolling'

Removed ScrollingCoordinator and a bunch of composited scrolling

R=ojan@chromium.org

Committed: https://chromium.googlesource.com/external/mojo/+/e02675be14b2e968cb6230ad767b70baed34ccf9

[rafaelw, 2014-11-11 22:42:08]

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

[ojan, 2014-11-11 23:02:52]

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

[ojan, 2014-11-11 23:02:53]

Please remove the BUG= and the random apostrophe from the change description.

lgtm once you're able to manually test that basic scrolling works.

https://codereview.chromium.org/721473002/diff/20001/sky/engine/platform/grap...
File sky/engine/platform/graphics/CompositingReasons.h (left):

https://codereview.chromium.org/721473002/diff/20001/sky/engine/platform/grap...
sky/engine/platform/graphics/CompositingReasons.h:65: const uint64_t
CompositingReasonLayerForVerticalScrollbar                = UINT64_C(1) << 44;
Nit: here and elsewhere, put a TODO to cleanup the values of these entries now
that we have empty slots.  (e.g. see line 65 below).

[rafaelw, 2014-11-12 00:42:02]

done & smoke-tested that scrollbars still draw & wheel-based scrolling works

[rafaelw, 2014-11-12 00:42:35]

Committed patchset #3 (id:40001) manually as
e02675be14b2e968cb6230ad767b70baed34ccf9.