Loosening the coupling between WebRTC and //third_party/protobuf

webrtc/BUILD.gn

Index: webrtc/BUILD.gn
diff --git a/webrtc/BUILD.gn b/webrtc/BUILD.gn
index f979ff1147d1934f78cd233452e47b212a5e9cea..c1d41ea059f8c269c26c161fb46ba37311126188 100644
--- a/webrtc/BUILD.gn
+++ b/webrtc/BUILD.gn
@@ -101,6 +101,10 @@ config("common_config") {
   cflags_cc = []
   defines = []
 
+  if (rtc_enable_protobuf) {
+    defines += [ "WEBRTC_ENABLE_PROTOBUF" ]
+  }

[kwiberg-webrtc, 2017/03/22 10:03:22]

(See the comment about -Wundef.) This would become

  if (rtc_enable_protobuf) {
    defines += [ "WEBRTC_ENABLE_PROTOBUF=1" ]
  } else {
    defines += [ "WEBRTC_ENABLE_PROTOBUF=0" ]
  }

[mbonadei, 2017/03/23 16:13:58]

Done.

+
   if (rtc_restrict_logging) {
     defines += [ "WEBRTC_RESTRICT_LOGGING" ]
   }