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base/trace_event/estimate_memory_usage.h

Index: base/trace_event/estimate_memory_usage.h
diff --git a/base/trace_event/estimate_memory_usage.h b/base/trace_event/estimate_memory_usage.h
index 0605e4e611ef364bee0bcce5c744db23d09bf5d1..8698853dc2f320384012f95c1c8d493b3cfdae38 100644
--- a/base/trace_event/estimate_memory_usage.h
+++ b/base/trace_event/estimate_memory_usage.h
@@ -247,8 +247,8 @@ size_t EstimateMemoryUsage(const std::basic_string<C, T, A>& string) {
     int refcount;
   };
   // There is one shared empty string, which we estimate to 0.
-  static const char* empty_cstr = nullptr;
-  if (!empty_cstr) empty_cstr = std::string().c_str();
+  static const value_type* empty_cstr = nullptr;
+  if (!empty_cstr) empty_cstr = string_type().c_str();
   return (string.c_str() == empty_cstr) ?
       0 :
       sizeof(Header) + (string.capacity() + 1) * sizeof(value_type);