Collect an initial set of stability activities

base/debug/activity_analyzer.h

Index: base/debug/activity_analyzer.h
diff --git a/base/debug/activity_analyzer.h b/base/debug/activity_analyzer.h
index 14244b7b1fe80384f477f7fbfacdfced7c7b374b..fbde0b9dbce31685506508229339643db87ef227 100644
--- a/base/debug/activity_analyzer.h
+++ b/base/debug/activity_analyzer.h
@@ -8,6 +8,7 @@
 #include <map>
 #include <memory>
 #include <set>
+#include <string>
 
 #include "base/base_export.h"
 #include "base/debug/activity_tracker.h"
@@ -73,6 +74,8 @@ class BASE_EXPORT ThreadActivityAnalyzer {
                      activity_snapshot_.thread_id);
   }
 
+  const ActivitySnapshot& activity_snapshot() { return activity_snapshot_; }
+
  private:
   friend class GlobalActivityAnalyzer;