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

net/test/local_test_server.cc

Index: net/test/local_test_server.cc
diff --git a/net/test/local_test_server.cc b/net/test/local_test_server.cc
index 7fe3e589ee305dc9794b62d7b5847c8b7d03220d..e67d4f950df380d833d3503203ed898d24fedfb0 100644
--- a/net/test/local_test_server.cc
+++ b/net/test/local_test_server.cc
@@ -122,7 +122,7 @@ bool LocalTestServer::Stop() {
     return true;
 
   // First check if the process has already terminated.
-  bool ret = base::WaitForSingleProcess(process_handle_, 0);
+  bool ret = base::WaitForSingleProcess(process_handle_, base::TimeDelta());
   if (!ret)
     ret = base::KillProcess(process_handle_, 1, true);