Pull Sky debugger up to services/debugger.

Pull Sky debugger up to services/debugger.

Sky debugger is a native mojo app that puts up an http server and talks
to other mojo apps in response to http requests, allowing to
interactively start/stop tracing, profile, etc.

This is generally useful also when one does not run mojo_shell through
skydb, hence this patch pulls the debugger into services/debugger.

We can then add plumbing for running with the debugger in devtools.

Bug: domokit/devtools/#4.

R=abarth@chromium.org

Committed: https://chromium.googlesource.com/external/mojo/+/84b510d3d0d975a34d4b7ada19db7754d44b06a9

[ppi, 2015-06-01 16:06:22]

ppi@chromium.org changed reviewers:
+ eseidel@chromium.org

[ppi, 2015-06-01 16:06:33]

Hi Eric,

ptal.

[abarth-chromium, 2015-06-01 16:40:53]

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

[abarth-chromium, 2015-06-01 16:40:53]

lgtm

[ppi, 2015-06-01 17:05:21]

Committed patchset #2 (id:20001) manually as
84b510d3d0d975a34d4b7ada19db7754d44b06a9 (presubmit successful).