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-rw-r--r--base/debug/trace_event.cc3
1 files changed, 2 insertions, 1 deletions
diff --git a/base/debug/trace_event.cc b/base/debug/trace_event.cc
index 3c1bd5c..969af1c 100644
--- a/base/debug/trace_event.cc
+++ b/base/debug/trace_event.cc
@@ -298,7 +298,8 @@ TraceResultBuffer::TraceResultBuffer() : append_comma_(false) {
TraceResultBuffer::~TraceResultBuffer() {
}
-void TraceResultBuffer::SetOutputCallback(OutputCallback json_chunk_callback) {
+void TraceResultBuffer::SetOutputCallback(
+ const OutputCallback& json_chunk_callback) {
output_callback_ = json_chunk_callback;
}