[Cleanup] Add missing #include. Remove useless ones.

This CL is the result of running include-what-you-use tool on part
of the code base (audio target and dependencies) plus manual fixes.

bug: webrtc:8311
Change-Id: I277d281ce943c3ecc1bd45fd8d83055931743604
Reviewed-on: https://webrtc-review.googlesource.com/c/106280
Commit-Queue: Yves Gerey <yvesg@google.com>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Patrik Höglund <phoglund@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25311}
diff --git a/modules/audio_coding/acm2/acm_codec_database.cc b/modules/audio_coding/acm2/acm_codec_database.cc
index e109cc7..879082c 100644
--- a/modules/audio_coding/acm2/acm_codec_database.cc
+++ b/modules/audio_coding/acm2/acm_codec_database.cc
@@ -18,7 +18,8 @@
 #include "modules/audio_coding/acm2/acm_codec_database.h"
 
 #include "absl/strings/match.h"
-#include "rtc_base/checks.h"
+#include "api/array_view.h"
+#include "modules/audio_coding/acm2/rent_a_codec.h"
 
 #if ((defined WEBRTC_CODEC_ISAC) && (defined WEBRTC_CODEC_ISACFX))
 #error iSAC and iSACFX codecs cannot be enabled at the same time
diff --git a/modules/audio_coding/acm2/acm_receiver.cc b/modules/audio_coding/acm2/acm_receiver.cc
index 93fa27c..3411d90 100644
--- a/modules/audio_coding/acm2/acm_receiver.cc
+++ b/modules/audio_coding/acm2/acm_receiver.cc
@@ -10,21 +10,22 @@
 
 #include "modules/audio_coding/acm2/acm_receiver.h"
 
-#include <stdlib.h>  // malloc
-
-#include <algorithm>  // sort
+#include <stdlib.h>
+#include <string.h>
+#include <cstdint>
 #include <vector>
 
 #include "absl/strings/match.h"
+#include "api/audio/audio_frame.h"
 #include "api/audio_codecs/audio_decoder.h"
-#include "common_audio/signal_processing/include/signal_processing_library.h"
+#include "common_types.h"
 #include "modules/audio_coding/acm2/acm_resampler.h"
 #include "modules/audio_coding/acm2/call_statistics.h"
 #include "modules/audio_coding/acm2/rent_a_codec.h"
 #include "modules/audio_coding/neteq/include/neteq.h"
+#include "modules/audio_coding/neteq/neteq_decoder_enum.h"
 #include "modules/include/module_common_types.h"
 #include "rtc_base/checks.h"
-#include "rtc_base/format_macros.h"
 #include "rtc_base/logging.h"
 #include "rtc_base/numerics/safe_conversions.h"
 #include "rtc_base/strings/audio_format_to_string.h"
diff --git a/modules/audio_coding/acm2/acm_receiver.h b/modules/audio_coding/acm2/acm_receiver.h
index a2ae723..8e7d839 100644
--- a/modules/audio_coding/acm2/acm_receiver.h
+++ b/modules/audio_coding/acm2/acm_receiver.h
@@ -11,6 +11,7 @@
 #ifndef MODULES_AUDIO_CODING_ACM2_ACM_RECEIVER_H_
 #define MODULES_AUDIO_CODING_ACM2_ACM_RECEIVER_H_
 
+#include <stdint.h>
 #include <map>
 #include <memory>
 #include <string>
@@ -18,19 +19,21 @@
 
 #include "absl/types/optional.h"
 #include "api/array_view.h"
-#include "api/audio/audio_frame.h"
-#include "common_audio/vad/include/webrtc_vad.h"
+#include "api/audio_codecs/audio_decoder.h"
+#include "api/audio_codecs/audio_format.h"
 #include "modules/audio_coding/acm2/acm_resampler.h"
 #include "modules/audio_coding/acm2/call_statistics.h"
 #include "modules/audio_coding/include/audio_coding_module.h"
-#include "modules/audio_coding/neteq/include/neteq.h"
 #include "rtc_base/criticalsection.h"
 #include "rtc_base/thread_annotations.h"
 
 namespace webrtc {
 
+class Clock;
 struct CodecInst;
 class NetEq;
+struct RTPHeader;
+struct WebRtcRTPHeader;
 
 namespace acm2 {
 
diff --git a/modules/audio_coding/acm2/acm_resampler.cc b/modules/audio_coding/acm2/acm_resampler.cc
index c0b2064..ca3583e 100644
--- a/modules/audio_coding/acm2/acm_resampler.cc
+++ b/modules/audio_coding/acm2/acm_resampler.cc
@@ -13,7 +13,6 @@
 #include <assert.h>
 #include <string.h>
 
-#include "common_audio/resampler/include/resampler.h"
 #include "rtc_base/logging.h"
 
 namespace webrtc {
diff --git a/modules/audio_coding/acm2/acm_resampler.h b/modules/audio_coding/acm2/acm_resampler.h
index 904ea52..96ba93a 100644
--- a/modules/audio_coding/acm2/acm_resampler.h
+++ b/modules/audio_coding/acm2/acm_resampler.h
@@ -11,6 +11,9 @@
 #ifndef MODULES_AUDIO_CODING_ACM2_ACM_RESAMPLER_H_
 #define MODULES_AUDIO_CODING_ACM2_ACM_RESAMPLER_H_
 
+#include <stddef.h>
+#include <stdint.h>
+
 #include "common_audio/resampler/include/push_resampler.h"
 
 namespace webrtc {
diff --git a/modules/audio_coding/acm2/audio_coding_module.cc b/modules/audio_coding/acm2/audio_coding_module.cc
index d675203..334c0e0 100644
--- a/modules/audio_coding/acm2/audio_coding_module.cc
+++ b/modules/audio_coding/acm2/audio_coding_module.cc
@@ -10,17 +10,24 @@
 
 #include "modules/audio_coding/include/audio_coding_module.h"
 
+#include <assert.h>
 #include <algorithm>
+#include <cstdint>
 
 #include "absl/strings/match.h"
+#include "api/array_view.h"
 #include "modules/audio_coding/acm2/acm_receiver.h"
 #include "modules/audio_coding/acm2/acm_resampler.h"
 #include "modules/audio_coding/acm2/codec_manager.h"
 #include "modules/audio_coding/acm2/rent_a_codec.h"
 #include "modules/include/module_common_types.h"
+#include "modules/include/module_common_types_public.h"
+#include "rtc_base/buffer.h"
 #include "rtc_base/checks.h"
+#include "rtc_base/criticalsection.h"
 #include "rtc_base/logging.h"
 #include "rtc_base/numerics/safe_conversions.h"
+#include "rtc_base/thread_annotations.h"
 #include "system_wrappers/include/metrics.h"
 
 namespace webrtc {
diff --git a/modules/audio_coding/acm2/codec_manager.cc b/modules/audio_coding/acm2/codec_manager.cc
index 5094e21..eda6555 100644
--- a/modules/audio_coding/acm2/codec_manager.cc
+++ b/modules/audio_coding/acm2/codec_manager.cc
@@ -10,10 +10,16 @@
 
 #include "modules/audio_coding/acm2/codec_manager.h"
 
+#include <string.h>
+#include <map>
+#include <memory>
+#include <utility>
+
 #include "absl/strings/match.h"
-#include "rtc_base/checks.h"
-//#include "rtc_base/format_macros.h"
+#include "api/array_view.h"
+#include "api/audio_codecs/audio_encoder.h"
 #include "modules/audio_coding/acm2/rent_a_codec.h"
+#include "rtc_base/checks.h"
 #include "rtc_base/logging.h"
 
 namespace webrtc {
diff --git a/modules/audio_coding/acm2/codec_manager.h b/modules/audio_coding/acm2/codec_manager.h
index ffbad96..22dbf4e 100644
--- a/modules/audio_coding/acm2/codec_manager.h
+++ b/modules/audio_coding/acm2/codec_manager.h
@@ -11,8 +11,6 @@
 #ifndef MODULES_AUDIO_CODING_ACM2_CODEC_MANAGER_H_
 #define MODULES_AUDIO_CODING_ACM2_CODEC_MANAGER_H_
 
-#include <map>
-
 #include "absl/types/optional.h"
 #include "common_types.h"  // NOLINT(build/include)
 #include "modules/audio_coding/acm2/rent_a_codec.h"
@@ -23,7 +21,6 @@
 
 namespace webrtc {
 
-class AudioDecoder;
 class AudioEncoder;
 
 namespace acm2 {