Add load states for requests stalled waiting for a socket slot
in socket pools / socket pool groups. This is intended to
make it easier to identify issues where something is holding
on to sockets and not releasing them, as is the case in two of the referenced bugs. Also helpful to identify proxy issues
where the global socket pool limit is reached.
Bug=241844,233181,248412
Review URL: https://chromiumcodereview.appspot.com/19278016
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@212739 0039d316-1c4b-4281-b951-d872f2087c98
5 files changed
