Revert of Mojo: add javascript bindings for request/response

Revert of Mojo: add javascript bindings for request/response (https://codereview.chromium.org/207503004/)

Reason for revert:
broke WebUIMojoTest.EndToEnd test.
http://build.chromium.org/p/chromium.webkit/builders/Linux%20Tests/builds/35528/steps/content_browsertests/logs/EndToEnd


Original issue's description:
> Mojo: add javascript bindings for request/response
> 
> If a mojom interface method specifies response parameters, then we'll generate javascript bindings that provide an additional callback parameter used to pass the response parameters. This mirrors the C++ implementation.
> 
> A future improvement will likely be to use promises instead, especially now that they are enabled on trunk.
> 
> As part of this CL, connector.js was also made consistent with connector.cc. It starts reading the message pipe immediately, handles write failures in a similar fashion, etc.
> 
> The Connection type from connector.js is factored out into a separate file as it now holds a Router object. router.js mirrors router.cc. The Connection type is really the mirror of the C++ RemotePtr<S> type.
> 
> Some basic request/response tests were added to connection_unittests.js. We'll probably want more testing.
> 
> R=abarth@chromium.org, mpcomplete@chromium.org
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=259932

TBR=mpcomplete@chromium.org,abarth@chromium.org,darin@chromium.org
NOTREECHECKS=true
NOTRY=true

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=260043

[tkent, 2014-03-28 00:42:33]

Created Revert of Mojo: add javascript bindings for request/response

[commit-bot: I haz the power, 2014-03-28 00:43:22]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/tkent@chromium.org/215883004/1

[commit-bot: I haz the power, 2014-03-28 00:46:35]

Change committed as 260043