Removing EXPAT_RELATIVE_PATH and rtc_relative_path

webrtc/BUILD.gn

Index: webrtc/BUILD.gn
diff --git a/webrtc/BUILD.gn b/webrtc/BUILD.gn
index b917566891835d6ab3c51f7eb69787cf8e2f3b92..1af5e804af1a417fb4e353ed453d9cd7c7a66dd8 100644
--- a/webrtc/BUILD.gn
+++ b/webrtc/BUILD.gn
@@ -43,7 +43,6 @@ config("common_inherited_config") {
       # TODO(kjellander): Cleanup unused ones and move defines closer to
       # the source when webrtc:4256 is completed.
       "FEATURE_ENABLE_VOICEMAIL",
-      "EXPAT_RELATIVE_PATH",
       "GTEST_RELATIVE_PATH",
       "WEBRTC_CHROMIUM_BUILD",
     ]
@@ -125,10 +124,6 @@ config("common_config") {
     defines += [ "WEBRTC_INCLUDE_INTERNAL_AUDIO_DEVICE" ]
   }
 
-  if (rtc_relative_path) {
-    defines += [ "EXPAT_RELATIVE_PATH" ]
-  }
-
   if (!rtc_libvpx_build_vp9) {
     defines += [ "RTC_DISABLE_VP9" ]
   }