experimental/observer/detail/ObserverManager.cpp missing gflags

Summary: Fix the build due to a missing gflags header

Reviewed By: yfeldblum

Differential Revision: D3905525

fbshipit-source-id: cc09189196a04741162c2d1561545d3fec417e5e

diff --git a/folly/experimental/observer/detail/ObserverManager.cpp b/folly/experimental/observer/detail/ObserverManager.cpp
index 7cd3832c19cc43d41c131a90ab5f9469c8702100..12c7ca90325865b79047341ff8ca6e978ea2d758 100644 (file)
--- a/folly/experimental/observer/detail/ObserverManager.cpp
+++ b/folly/experimental/observer/detail/ObserverManager.cpp
@@ -17,6 +17,7 @@
 
 #include <folly/MPMCQueue.h>
 #include <folly/Singleton.h>
+#include <folly/portability/GFlags.h>
 
 namespace folly {
 namespace observer_detail {