Delete deprecated StartRtcEventLog override with PlatformFile

Bug: webrtc:6463
Change-Id: I57c2372a232d72b054d8e3e4f423e11b3fb22430
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/134460
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Reviewed-by: Björn Terelius <terelius@webrtc.org>
Reviewed-by: Elad Alon <eladalon@webrtc.org>
Commit-Queue: Niels Moller <nisse@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#28131}
diff --git a/pc/peer_connection.cc b/pc/peer_connection.cc
index d0698d8..dcb6c8a 100644
--- a/pc/peer_connection.cc
+++ b/pc/peer_connection.cc
@@ -54,7 +54,6 @@
 #include "rtc_base/bind.h"
 #include "rtc_base/checks.h"
 #include "rtc_base/logging.h"
-#include "rtc_base/numerics/safe_conversions.h"
 #include "rtc_base/string_encode.h"
 #include "rtc_base/strings/string_builder.h"
 #include "rtc_base/trace_event.h"
@@ -3756,21 +3755,6 @@
   return nullptr;
 }
 
-bool PeerConnection::StartRtcEventLog(rtc::PlatformFile file,
-                                      int64_t max_size_bytes) {
-  // TODO(eladalon): It would be better to not allow negative values into PC.
-  const size_t max_size = (max_size_bytes < 0)
-                              ? RtcEventLog::kUnlimitedOutput
-                              : rtc::saturated_cast<size_t>(max_size_bytes);
-  int64_t output_period_ms = webrtc::RtcEventLog::kImmediateOutput;
-  if (field_trial::IsEnabled("WebRTC-RtcEventLogNewFormat")) {
-    output_period_ms = 5000;
-  }
-  return StartRtcEventLog(
-      absl::make_unique<RtcEventLogOutputFile>(file, max_size),
-      output_period_ms);
-}
-
 bool PeerConnection::StartRtcEventLog(std::unique_ptr<RtcEventLogOutput> output,
                                       int64_t output_period_ms) {
   // TODO(eladalon): In C++14, this can be done with a lambda.
@@ -3788,8 +3772,11 @@
 
 bool PeerConnection::StartRtcEventLog(
     std::unique_ptr<RtcEventLogOutput> output) {
-  return StartRtcEventLog(std::move(output),
-                          webrtc::RtcEventLog::kImmediateOutput);
+  int64_t output_period_ms = webrtc::RtcEventLog::kImmediateOutput;
+  if (field_trial::IsEnabled("WebRTC-RtcEventLogNewFormat")) {
+    output_period_ms = 5000;
+  }
+  return StartRtcEventLog(std::move(output), output_period_ms);
 }
 
 void PeerConnection::StopRtcEventLog() {