Revert 256305 "Add SharedWorkerServiceImpl::CheckWorkerDependenc..."

This fired the leak detector. See bug 351492 for details.

> Add SharedWorkerServiceImpl::CheckWorkerDependency().
> 
> This method checks the worker dependency of renderer processes and calls IncrementWorkerRefCount and DecrementWorkerRefCount of RenderProcessHostImpl on UI thread if necessary.
> 
> BUG=327256
> 
> Review URL: https://codereview.chromium.org/187533002

TBR=horo@chromium.org

Review URL: https://codereview.chromium.org/195723003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@256323 0039d316-1c4b-4281-b951-d872f2087c98
7 files changed