(4) Rename files to snake_case: update BUILD.gn, include paths, header guards, and DEPS entries

Mechanically generated by running this command:

tools_webrtc/do-renames.sh update all-renames.txt && git cl format

Then manually updating:

tools_webrtc/sanitizers/tsan_suppressions_webrtc.cc

Bug: webrtc:10159
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Change-Id: I54824cd91dada8fc3ee3d098f971bc319d477833
Reviewed-on: https://webrtc-review.googlesource.com/c/115653
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#26226}
diff --git a/pc/peer_connection_bundle_unittest.cc b/pc/peer_connection_bundle_unittest.cc
index fca9914..8f44c39 100644
--- a/pc/peer_connection_bundle_unittest.cc
+++ b/pc/peer_connection_bundle_unittest.cc
@@ -11,24 +11,24 @@
 #include "api/audio_codecs/builtin_audio_decoder_factory.h"
 #include "api/audio_codecs/builtin_audio_encoder_factory.h"
 #include "api/create_peerconnection_factory.h"
-#include "api/peerconnectionproxy.h"
+#include "api/peer_connection_proxy.h"
 #include "api/video_codecs/builtin_video_decoder_factory.h"
 #include "api/video_codecs/builtin_video_encoder_factory.h"
-#include "p2p/base/fakeportallocator.h"
-#include "p2p/base/teststunserver.h"
-#include "p2p/client/basicportallocator.h"
-#include "pc/mediasession.h"
-#include "pc/peerconnection.h"
-#include "pc/peerconnectionwrapper.h"
-#include "pc/sdputils.h"
+#include "p2p/base/fake_port_allocator.h"
+#include "p2p/base/test_stun_server.h"
+#include "p2p/client/basic_port_allocator.h"
+#include "pc/media_session.h"
+#include "pc/peer_connection.h"
+#include "pc/peer_connection_wrapper.h"
+#include "pc/sdp_utils.h"
 #ifdef WEBRTC_ANDROID
-#include "pc/test/androidtestinitializer.h"
+#include "pc/test/android_test_initializer.h"
 #endif
 #include "absl/memory/memory.h"
-#include "pc/test/fakeaudiocapturemodule.h"
-#include "rtc_base/fakenetwork.h"
+#include "pc/test/fake_audio_capture_module.h"
+#include "rtc_base/fake_network.h"
 #include "rtc_base/gunit.h"
-#include "rtc_base/virtualsocketserver.h"
+#include "rtc_base/virtual_socket_server.h"
 #include "test/gmock.h"
 
 namespace webrtc {