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

webrtc/logging/BUILD.gn

Index: webrtc/logging/BUILD.gn
diff --git a/webrtc/logging/BUILD.gn b/webrtc/logging/BUILD.gn
index aedbd9e48beef584b6fd8e2a0691a2bb43280f6b..11c816e11b81c63017d041ef8ded74ef4cc665d9 100644
--- a/webrtc/logging/BUILD.gn
+++ b/webrtc/logging/BUILD.gn
@@ -51,6 +51,7 @@ rtc_static_library("rtc_event_log_impl") {
   deps = [
     ":rtc_event_log_api",
     "..:webrtc_common",
+    "../base:protobuf_utils",
     "../base:rtc_base_approved",
     "../call:call_interfaces",
     "../modules/audio_coding:audio_network_adaptor",
@@ -97,6 +98,7 @@ if (rtc_enable_protobuf) {
       suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
     }
     deps = [
+      "../base:protobuf_utils",
       "../base:rtc_base_approved",
     ]
   }