Add missing RTC_EXPORT for the component build.

Bug: webrtc:9419
Change-Id: I3225259fb4cc55e9820f590928795f4587f1e3cb
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/153884
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#29479}
diff --git a/rtc_base/ssl_adapter.h b/rtc_base/ssl_adapter.h
index 240899f..e0ed81e 100644
--- a/rtc_base/ssl_adapter.h
+++ b/rtc_base/ssl_adapter.h
@@ -18,6 +18,7 @@
 #include "rtc_base/ssl_certificate.h"
 #include "rtc_base/ssl_identity.h"
 #include "rtc_base/ssl_stream_adapter.h"
+#include "rtc_base/system/rtc_export.h"
 
 namespace rtc {
 
@@ -96,10 +97,10 @@
 
 // Call this on the main thread, before using SSL.
 // Call CleanupSSL when finished with SSL.
-bool InitializeSSL();
+RTC_EXPORT bool InitializeSSL();
 
 // Call to cleanup additional threads, and also the main thread.
-bool CleanupSSL();
+RTC_EXPORT bool CleanupSSL();
 
 }  // namespace rtc