Index: third_party/mojo/src/mojo/edk/system/core.h |
diff --git a/third_party/mojo/src/mojo/edk/system/core.h b/third_party/mojo/src/mojo/edk/system/core.h |
index 7833193c44f86c036359b7596ef68bd5a9ac7dc6..aadfb661ec241d6938165e1b716cae3fe1453eec 100644 |
--- a/third_party/mojo/src/mojo/edk/system/core.h |
+++ b/third_party/mojo/src/mojo/edk/system/core.h |
@@ -58,7 +58,7 @@ class MOJO_SYSTEM_IMPL_EXPORT Core { |
// awakable.h. In particular, it must not call any Mojo system functions. |
MojoResult AsyncWait(MojoHandle handle, |
MojoHandleSignals signals, |
- base::Callback<void(MojoResult)> callback); |
+ const base::Callback<void(MojoResult)>& callback); |
embedder::PlatformSupport* platform_support() const { |
return platform_support_; |