message: Export rtc::tracing symbols for use in Chrome Remote Desktop.
  Cr-Commit-Position: refs/heads/main@{#35739}
diff: #include <stdio.h>
  +#include "rtc_base/system/rtc_export.h"
  +
  namespace webrtc {
  typedef const unsigned char* (*GetCategoryEnabledPtr)(const char* name);
  @@ -70,12 +72,12 @@ class EventTracer {
  namespace rtc {
  namespace tracing {
  // Set up internal event tracer.
  -void SetupInternalTracer();
  -bool StartInternalCapture(const char* filename);
  -void StartInternalCaptureToFile(FILE* file);
  -void StopInternalCapture();
  +RTC_EXPORT void SetupInternalTracer();
  +RTC_EXPORT bool StartInternalCapture(const char* filename);
  +RTC_EXPORT void StartInternalCaptureToFile(FILE* file);
  +RTC_EXPORT void StopInternalCapture();
  // Make sure we run this, this will tear down the internal tracing.
  -void ShutdownInternalTracer();
  +RTC_EXPORT void ShutdownInternalTracer();
  } // namespace tracing
  } // namespace rtc
  