Move RtcEventLog object from inside VoiceEngine to Call.

webrtc/call/rtc_event_log.cc

 /*
  *  Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 20 matching lines @@
 // Files generated at build-time by the protobuf compiler.
 #ifdef WEBRTC_ANDROID_PLATFORM_BUILD
 #include "external/webrtc/webrtc/call/rtc_event_log.pb.h"
 #else
 #include "webrtc/call/rtc_event_log.pb.h"
 #endif
 #endif
 
 namespace webrtc {
 
-#ifndef ENABLE_RTC_EVENT_LOG
-
-// No-op implementation if flag is not set.
+// No-op implementation is used if flag is not set, or in tests.
 class RtcEventLogNullImpl final : public RtcEventLog {
  public:
   bool StartLogging(const std::string& file_name,
                     int64_t max_size_bytes) override {
     return false;
   }
   bool StartLogging(rtc::PlatformFile platform_file,
                     int64_t max_size_bytes) override {
     // The platform_file is open and needs to be closed.
     if (!rtc::ClosePlatformFile(platform_file)) {
@@ skipping 13 matching lines @@
   void LogRtcpPacket(PacketDirection direction,
                      MediaType media_type,
                      const uint8_t* packet,
                      size_t length) override {}
   void LogAudioPlayout(uint32_t ssrc) override {}
   void LogBwePacketLossEvent(int32_t bitrate,
                              uint8_t fraction_loss,
                              int32_t total_packets) override {}
 };
 
-#else  // ENABLE_RTC_EVENT_LOG is defined
+#ifdef ENABLE_RTC_EVENT_LOG
 
 class RtcEventLogImpl final : public RtcEventLog {
  public:
   explicit RtcEventLogImpl(const Clock* clock);
   ~RtcEventLogImpl() override;
 
   bool StartLogging(const std::string& file_name,
                     int64_t max_size_bytes) override;
   bool StartLogging(rtc::PlatformFile platform_file,
                     int64_t max_size_bytes) override;
@@ skipping 370 matching lines @@
 
 // RtcEventLog member functions.
 std::unique_ptr<RtcEventLog> RtcEventLog::Create(const Clock* clock) {
 #ifdef ENABLE_RTC_EVENT_LOG
   return std::unique_ptr<RtcEventLog>(new RtcEventLogImpl(clock));
 #else
   return std::unique_ptr<RtcEventLog>(new RtcEventLogNullImpl());
 #endif  // ENABLE_RTC_EVENT_LOG
 }
 
+std::unique_ptr<RtcEventLog> RtcEventLog::CreateNull() {
+  return std::unique_ptr<RtcEventLog>(new RtcEventLogNullImpl());
+}
+
 }  // namespace webrtc