[Cleanup] Add missing #include. Remove useless ones. IWYU part 2.

This is a follow-up to
https://webrtc-review.googlesource.com/c/src/+/106280.
This time the whole code base is covered.
Some files may have not been fixed though, whenever the IWYU tool
was breaking the build.

Bug: webrtc:8311
Change-Id: I2c31f552a87e887d33931d46e87b6208b1e483ef
Reviewed-on: https://webrtc-review.googlesource.com/c/111965
Commit-Queue: Yves Gerey <yvesg@google.com>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25830}
diff --git a/call/callfactory.cc b/call/callfactory.cc
index ab057be..4c46a40 100644
--- a/call/callfactory.cc
+++ b/call/callfactory.cc
@@ -10,14 +10,15 @@
 
 #include "call/callfactory.h"
 
+#include <stdio.h>
 #include <memory>
 #include <string>
-#include <utility>
 
 #include "absl/types/optional.h"
+#include "api/test/simulated_network.h"
 #include "call/call.h"
 #include "call/degraded_call.h"
-#include "call/fake_network_pipe.h"
+#include "rtc_base/checks.h"
 #include "system_wrappers/include/field_trial.h"
 
 namespace webrtc {