Switch to TimeDelta interfaces for process waiting functions in net and ipc.

net/proxy/dhcp_proxy_script_fetcher_win.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_PROXY_DHCP_PROXY_SCRIPT_FETCHER_WIN_H_
 #define NET_PROXY_DHCP_PROXY_SCRIPT_FETCHER_WIN_H_
 #pragma once
 
 #include <set>
 #include <string>
@@ skipping 66 matching lines @@
     // worker thread, then used again on the originating thread only when
     // the task has completed on the worker thread. No locking required.
     std::set<std::string> adapter_names_;
 
     DISALLOW_COPY_AND_ASSIGN(AdapterQuery);
   };
 
   // Virtual methods introduced to allow unit testing.
   virtual DhcpProxyScriptAdapterFetcher* ImplCreateAdapterFetcher();
   virtual AdapterQuery* ImplCreateAdapterQuery();
-  virtual int ImplGetMaxWaitMs();
+  virtual base::TimeDelta ImplGetMaxWait();
   virtual void ImplOnGetCandidateAdapterNamesDone() {}
 
  private:
   // Event/state transition handlers
   void CancelImpl();
   void OnGetCandidateAdapterNamesDone(scoped_refptr<AdapterQuery> query);
   void OnFetcherDone(int result);
   void OnWaitTimer();
   void TransitionToDone();
 
@@ skipping 63 matching lines @@
 
   // Time |Fetch()| was last called, 0 if never.
   base::TimeTicks fetch_start_time_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(DhcpProxyScriptFetcherWin);
 };
 
 }  // namespace net
 
 #endif  // NET_PROXY_DHCP_PROXY_SCRIPT_FETCHER_WIN_H_