Add stateful filesystem scanner.

This will be used to interrupt long scans.

Bug: 74584014
Change-Id: I80206a3dd6cce265fc957532c855f07f08120a7d
diff --git a/src/traced/probes/filesystem/inode_file_data_source.cc b/src/traced/probes/filesystem/inode_file_data_source.cc
index 0a75dc0..b0086cf 100644
--- a/src/traced/probes/filesystem/inode_file_data_source.cc
+++ b/src/traced/probes/filesystem/inode_file_data_source.cc
@@ -29,9 +29,9 @@
 #include "perfetto/tracing/core/trace_writer.h"
 
 #include "perfetto/trace/trace_packet.pbzero.h"
+#include "src/traced/probes/filesystem/file_scanner.h"
 
 namespace perfetto {
-
 namespace {
 const int kScanIntervalMs = 10000;  // 10s
 }