tracing: Fix interceptor build on GCC and Windows

Fix the console interceptor build on GCC and Windows, and add a note
about the console interceptor into the changelog.

Bug: 170628040
Change-Id: Ia4a67a4cce6d53666f68b68960e16375c48113d4
diff --git a/CHANGELOG b/CHANGELOG
index c6781fd..8841f7c 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -2,6 +2,7 @@
   Tracing service and probes:
     * Added trace packet interceptor API for rerouting trace data into
       non-Perfetto systems.
+    * Added support for printing track events to the console.
   Trace Processor:
     *
   UI: