Change integration test send...() methods to return structured objects.

This allows us to use completions when analyzing responses from the
server in integration tests.

R=brianwilkerson@google.com, scheglov@google.com

Review URL: https://codereview.chromium.org//628783002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@40909 260f80e4-7a28-3924-810f-c04153c831b5
hookup analysis options to hints pref page

BUG=
R=scheglov@google.com

Review URL: https://codereview.chromium.org//625223002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@40910 260f80e4-7a28-3924-810f-c04153c831b5
Add Domain handler with startup and shutdown stubs

As per discussion this is a proposal for an api to be implemented by server to notify domains that need to be called before handling requests will be started and after it has finished

BUG=
R=brianwilkerson@google.com, danrubel@google.com

Review URL: https://codereview.chromium.org//625923003

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@40911 260f80e4-7a28-3924-810f-c04153c831b5