Log time between network drops -- from online to offline.

src/platform/metrics/network_states.h

-// Copyright (c) 2009 The Chromium OS Authors. All rights reserved.
+// Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // A table of network states, to be included when building tabular things.
 //
 // This file is used to construct two things: an enumerated type in
 // metrics_daemon.h, and a table of structures with state names in
 // metrics_daemon.cc.  Including this file ensures that the two tables are
 // always in sync (and saves typing).  I don't know of other ways of achieving
 // the same result in C/C++, but it doesn't mean there isn't one.
 
 // Before you include this file, define STATE to do something useful, or else
 // if will be a no-op.  STATE will be undefined on exit.  Don't worry about
 // collisions for the STATE macro (as long as it's a macro) because the
 // compiler will flag them---in that case, just change the name.  If someone is
 // misguided enough to use STATE for something other than a macro, the error
 // messages will be slightly more complicated.
 
 
 #ifndef STATE
 #define STATE(name, capname)
 #endif
 
-STATE(association, Association)
-STATE(configuration, Configuration)
-STATE(disconnect, Disconnect)
-STATE(failure, Failure)
-STATE(idle, Idle)
 STATE(offline, Offline)
 STATE(online, Online)
-STATE(ready, Ready)
 
 #undef STATE