Revert of Loosening the coupling between WebRTC and //third_party/protobuf

webrtc/logging/rtc_event_log/rtc_event_log_parser.cc

Index: webrtc/logging/rtc_event_log/rtc_event_log_parser.cc
diff --git a/webrtc/logging/rtc_event_log/rtc_event_log_parser.cc b/webrtc/logging/rtc_event_log/rtc_event_log_parser.cc
index 855cb9731b4ddabde511fc0dd942b9b0670f52ed..815308df11fe804341bb0d9c9efe9535b4d2f40c 100644
--- a/webrtc/logging/rtc_event_log/rtc_event_log_parser.cc
+++ b/webrtc/logging/rtc_event_log/rtc_event_log_parser.cc
@@ -20,7 +20,6 @@
 
 #include "webrtc/base/checks.h"
 #include "webrtc/base/logging.h"
-#include "webrtc/base/protobuf_utils.h"
 #include "webrtc/call/call.h"
 #include "webrtc/logging/rtc_event_log/rtc_event_log.h"
 #include "webrtc/modules/rtp_rtcp/include/rtp_rtcp_defines.h"
@@ -128,8 +127,8 @@
 
 void GetHeaderExtensions(
     std::vector<RtpExtension>* header_extensions,
-    const RepeatedPtrField<rtclog::RtpHeaderExtension>&
-    proto_header_extensions) {
+    const google::protobuf::RepeatedPtrField<rtclog::RtpHeaderExtension>&
+        proto_header_extensions) {
   header_extensions->clear();
   for (auto& p : proto_header_extensions) {
     RTC_CHECK(p.has_name());