[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}

test/test_video_capturer.cc

diff --git a/test/test_video_capturer.cc b/test/test_video_capturer.cc
index d13f6e0..bc0ceda 100644
--- a/test/test_video_capturer.cc
+++ b/test/test_video_capturer.cc
@@ -10,7 +10,10 @@
 
 #include "test/test_video_capturer.h"
 
-#include "rtc_base/constructormagic.h"
+#include "api/video/i420_buffer.h"
+#include "api/video/video_frame_buffer.h"
+#include "api/video/video_rotation.h"
+#include "rtc_base/scoped_ref_ptr.h"
 
 namespace webrtc {
 namespace test {