Enabling 'gn check' on webrtc/sdk

webrtc/sdk/android/src/jni/peerconnection_jni.cc

Index: webrtc/sdk/android/src/jni/peerconnection_jni.cc
diff --git a/webrtc/sdk/android/src/jni/peerconnection_jni.cc b/webrtc/sdk/android/src/jni/peerconnection_jni.cc
index ecce13e0a0f8016316eac6e3ebaaa72a2a99fd5b..c07d58faffc6210116057b02cf9d52f3a9432ea8 100644
--- a/webrtc/sdk/android/src/jni/peerconnection_jni.cc
+++ b/webrtc/sdk/android/src/jni/peerconnection_jni.cc
@@ -74,7 +74,10 @@
 #include "webrtc/sdk/android/src/jni/jni_helpers.h"
 #include "webrtc/sdk/android/src/jni/native_handle_impl.h"
 #include "webrtc/sdk/android/src/jni/rtcstatscollectorcallbackwrapper.h"
-#include "webrtc/system_wrappers/include/field_trial_default.h"
+// Adding 'nogncheck' to disable the gn include headers check.
+// We don't want to depend on 'system_wrappers:field_trial_default' because
+// clients should be able to provide their own implementation.
+#include "webrtc/system_wrappers/include/field_trial_default.h" // nogncheck
 #include "webrtc/system_wrappers/include/logcat_trace_context.h"
 #include "webrtc/system_wrappers/include/trace.h"
 #include "webrtc/voice_engine/include/voe_base.h"