Reland of: Profile_Metrics integration with Keystone

chrome/installer/util/google_update_settings.h

Index: chrome/installer/util/google_update_settings.h
diff --git a/chrome/installer/util/google_update_settings.h b/chrome/installer/util/google_update_settings.h
index ea5a7d5878f9b49c9fcfb57ceae741d7460f7f1e..e3a01685f1974c20741a8a8cd5322ccef0f357b6 100644
--- a/chrome/installer/util/google_update_settings.h
+++ b/chrome/installer/util/google_update_settings.h
@@ -218,7 +218,8 @@ class GoogleUpdateSettings {
 
   // This method updates the values that report how many profiles are in use
   // and how many of those are signed-in.
-  static void UpdateProfileCounts(int profiles_active, int profiles_signedin);
+  static void UpdateProfileCounts(size_t profiles_active,
+                                  size_t profiles_signedin);
 
   // For system-level installs, we need to be able to communicate the results
   // of the Toast Experiments back to Google Update. The problem is just that