clang tot: Disable -Wuser-defined-warnings

build/config/compiler/BUILD.gn

Index: build/config/compiler/BUILD.gn
diff --git a/build/config/compiler/BUILD.gn b/build/config/compiler/BUILD.gn
index 1ebd6c0b12b272328bdd840fc7723cd88f3c018d..9d651ad27157f85f6aa0d723bf677abf284e614a 100644
--- a/build/config/compiler/BUILD.gn
+++ b/build/config/compiler/BUILD.gn
@@ -1082,6 +1082,9 @@ config("default_warnings") {
         cflags += [
           # TODO(hans): https://crbug.com/681136
           "-Wno-unused-lambda-capture",
+
+          # TODO(thakis ): https://crbug.com/683349

[hans, 2017/01/23 16:58:39]

nit: there's an extra space here

[Nico, 2017/01/23 17:10:59]

I actually changed my username from thakis to thakis . I'm now thakis
@chromium.org.

(thanks, will address in follow-up, seems sad to delay landing of this by 2h
just to fix a comment)

+          "-Wno-user-defined-warnings",
         ]
       }
     }