Crash reporter: collect suspend and resume info from power manager

unclean_shutdown_collector.h

Index: unclean_shutdown_collector.h
diff --git a/unclean_shutdown_collector.h b/unclean_shutdown_collector.h
index e7d8cef95948793b77e70bed873812a36a558ba0..0709ea28878b0218006cf598b8c6052338be376f 100644
--- a/unclean_shutdown_collector.h
+++ b/unclean_shutdown_collector.h
@@ -33,6 +33,9 @@ class UncleanShutdownCollector : public CrashCollector {
 
   bool DeleteUncleanShutdownFile();
 
+  // Check and log modification time on file
+  bool ReadModificationTime(const char *file_string);
+
   const char *unclean_shutdown_file_;
 };