[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}

api/video/i010_buffer.h

@@ -11,11 +11,13 @@
 #ifndef API_VIDEO_I010_BUFFER_H_
 #define API_VIDEO_I010_BUFFER_H_
 
+#include <stdint.h>
 #include <memory>
 
 #include "api/video/video_frame_buffer.h"
 #include "api/video/video_rotation.h"
 #include "rtc_base/memory/aligned_malloc.h"
+#include "rtc_base/scoped_ref_ptr.h"
 
 namespace webrtc {