[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/rtc_tools/frame_analyzer/reference_less_video_analysis_lib.cc b/rtc_tools/frame_analyzer/reference_less_video_analysis_lib.cc
index 80576b3..ddc5d57 100644
--- a/rtc_tools/frame_analyzer/reference_less_video_analysis_lib.cc
+++ b/rtc_tools/frame_analyzer/reference_less_video_analysis_lib.cc
@@ -8,12 +8,10 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 #include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <iostream>
 #include <numeric>
 #include <vector>
 
+#include "api/video/video_frame_buffer.h"
 #include "rtc_tools/frame_analyzer/reference_less_video_analysis_lib.h"
 #include "rtc_tools/frame_analyzer/video_quality_analysis.h"