Remove virtual/serviceworker test suite as --enable-service-worker will be removed

Remove virtual/serviceworker test suite as --enable-service-worker will be removed

Service Worker will only be gated by --enable-experimental-web-platform-features,
so it will always be enabled in layout tests.

BUG=365201

[falken, 2014-06-18 09:40:03]

This patch must land before https://codereview.chromium.org/339973003/

[jsbell, 2014-06-18 18:04:36]

Can this "before" patch just be a TestExpectations change that marks all of the
non-virtual tests as [ Pass Fail ]?

Then the "after" patch can clean up base.py (to stop running the virutal tests)
and simply delete *all* of the expectation files -
https://codereview.chromium.org/328243002 they are not needed any more.

And can the code changes be a separate patch?

[falken, 2014-06-19 00:37:04]

On 2014/06/18 18:04:36, jsbell wrote:
> Can this "before" patch just be a TestExpectations change that marks all of
the
> non-virtual tests as [ Pass Fail ]?
> 
> Then the "after" patch can clean up base.py (to stop running the virutal
tests)
> and simply delete *all* of the expectation files -
> https://codereview.chromium.org/328243002 they are not needed any more.

Ohh! I didn't know that. That's great, will do.
(My idea here was to move the expectation files from virtual to non-virtual to
ensure we're not regressing anything.)


> And can the code changes be a separate patch?

Yeah, I should have done that, was just trying to minimize the sides of the
n-sided patch.