(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/call/call.cc b/call/call.cc
index 3ffea84..a57a41c 100644
--- a/call/call.cc
+++ b/call/call.cc
@@ -45,7 +45,7 @@
 #include "modules/utility/include/process_thread.h"
 #include "modules/video_coding/fec_controller_default.h"
 #include "rtc_base/checks.h"
-#include "rtc_base/constructormagic.h"
+#include "rtc_base/constructor_magic.h"
 #include "rtc_base/location.h"
 #include "rtc_base/logging.h"
 #include "rtc_base/numerics/safe_minmax.h"
@@ -54,7 +54,7 @@
 #include "rtc_base/synchronization/rw_lock_wrapper.h"
 #include "rtc_base/task_queue.h"
 #include "rtc_base/thread_annotations.h"
-#include "rtc_base/timeutils.h"
+#include "rtc_base/time_utils.h"
 #include "rtc_base/trace_event.h"
 #include "system_wrappers/include/clock.h"
 #include "system_wrappers/include/cpu_info.h"