Update from https://crrev.com/318214

tools/clang/blink_gc_plugin/tests/trace_after_dispatch_impl_error.txt

Index: tools/clang/blink_gc_plugin/tests/trace_after_dispatch_impl_error.txt
diff --git a/tools/clang/blink_gc_plugin/tests/trace_after_dispatch_impl_error.txt b/tools/clang/blink_gc_plugin/tests/trace_after_dispatch_impl_error.txt
new file mode 100644
index 0000000000000000000000000000000000000000..68b5a72ee6d110fcc66bbd665f61fb10d91a43e1
--- /dev/null
+++ b/tools/clang/blink_gc_plugin/tests/trace_after_dispatch_impl_error.txt
@@ -0,0 +1,28 @@
+In file included from trace_after_dispatch_impl_error.cpp:5:
+./trace_after_dispatch_impl_error.h:32:3: warning: [blink-gc] Class 'TraceAfterDispatchInlinedBase' has untraced fields that require tracing.
+  void traceAfterDispatchImpl(VisitorDispatcher visitor) {
+  ^
+./trace_after_dispatch_impl_error.h:37:3: note: [blink-gc] Untraced field 'x_base_' declared here:
+  Member<X> x_base_;
+  ^
+./trace_after_dispatch_impl_error.h:48:3: warning: [blink-gc] Base class 'TraceAfterDispatchInlinedBase' of derived class 'TraceAfterDispatchInlinedDerived' requires tracing.
+  void traceAfterDispatchImpl(VisitorDispatcher visitor) {
+  ^
+./trace_after_dispatch_impl_error.h:48:3: warning: [blink-gc] Class 'TraceAfterDispatchInlinedDerived' has untraced fields that require tracing.
+./trace_after_dispatch_impl_error.h:52:3: note: [blink-gc] Untraced field 'x_derived_' declared here:
+  Member<X> x_derived_;
+  ^
+trace_after_dispatch_impl_error.cpp:37:1: warning: [blink-gc] Class 'TraceAfterDispatchExternBase' has untraced fields that require tracing.
+inline void TraceAfterDispatchExternBase::traceAfterDispatchImpl(
+^
+./trace_after_dispatch_impl_error.h:69:3: note: [blink-gc] Untraced field 'x_base_' declared here:
+  Member<X> x_base_;
+  ^
+trace_after_dispatch_impl_error.cpp:47:1: warning: [blink-gc] Base class 'TraceAfterDispatchExternBase' of derived class 'TraceAfterDispatchExternDerived' requires tracing.
+inline void TraceAfterDispatchExternDerived::traceAfterDispatchImpl(
+^
+trace_after_dispatch_impl_error.cpp:47:1: warning: [blink-gc] Class 'TraceAfterDispatchExternDerived' has untraced fields that require tracing.
+./trace_after_dispatch_impl_error.h:82:3: note: [blink-gc] Untraced field 'x_derived_' declared here:
+  Member<X> x_derived_;
+  ^
+6 warnings generated.