chrome: Remove 10 exit time destructors and 2 static initializers.

chrome/browser/metrics/metrics_log.h

Index: chrome/browser/metrics/metrics_log.h
diff --git a/chrome/browser/metrics/metrics_log.h b/chrome/browser/metrics/metrics_log.h
index 95b125218b3a3463742c6b9d0ab0b02e1713af68..0903b1428f87d68b831f2a77d24c6748bb4c8008 100644
--- a/chrome/browser/metrics/metrics_log.h
+++ b/chrome/browser/metrics/metrics_log.h
@@ -65,6 +65,11 @@ class MetricsLog : public MetricsLogBase {
 
   virtual MetricsLog* AsMetricsLog();
 
+  // Use |extension| in all uploaded appversions in addition to the standard
+  // version string.
+  static void set_version_extension(const std::string& extension);
+  static const std::string& version_extension();
+
  private:
   FRIEND_TEST_ALL_PREFIXES(MetricsLogTest, ChromeOSStabilityData);