Clean up straggler classes to use embedded signin in page in the new profiles world.

chrome/browser/ui/sync/signin_histogram.h

Index: chrome/browser/ui/sync/signin_histogram.h
diff --git a/chrome/browser/ui/sync/signin_histogram.h b/chrome/browser/ui/sync/signin_histogram.h
index 1137e4beca55cc6a1d15cfc85e1ca2060e93a7a2..9ea1f25001b69d30a958a66dcd20b08fef50a1bd 100644
--- a/chrome/browser/ui/sync/signin_histogram.h
+++ b/chrome/browser/ui/sync/signin_histogram.h
@@ -8,16 +8,16 @@
 namespace signin {
 
 // Enum values used for use with the "Signin.Reauth" histogram.
-enum account_reauth{
-  // The user gave the wrong email when doing a reauth.
+enum AccountReauth {
+  // The user gave the wrong email when doing a reauthentication.
   HISTOGRAM_ACCOUNT_MISSMATCH,
 
-  // The user given a reauth login screen.
+  // The user was shown a reauthentication login screen.
   HISTOGRAM_SHOWN,
 
   HISTOGRAM_MAX
 };
 
-}
+}  // namespace signin
 
 #endif  // CHROME_BROWSER_UI_SYNC_SIGNIN_HISTOGRAM_H_