[Extensions] Add renderer-side logic to short circuit activity logging

extensions/renderer/scripts_run_info.h

Index: extensions/renderer/scripts_run_info.h
diff --git a/extensions/renderer/scripts_run_info.h b/extensions/renderer/scripts_run_info.h
index ebd51dfa43bcf486e793f622e6adb04d2544e4fa..6156eeb99be77ce74a67601e6cbaf8dda378e470 100644
--- a/extensions/renderer/scripts_run_info.h
+++ b/extensions/renderer/scripts_run_info.h
@@ -41,8 +41,9 @@ struct ScriptsRunInfo {
   // The elapsed time since the ScriptsRunInfo was constructed.
   base::ElapsedTimer timer;
 
-  // Log information about a given script run.
-  void LogRun();
+  // Log information about a given script run. If |send_script_activity| is
+  // true, this also informs the browser of the script run.
+  void LogRun(bool send_script_activity);
 
  private:
   // The routinig id to use to notify the browser of any injections. Since the