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..29098c7bb342bd354e64d4e13d7c3248e0500744 100644
--- a/chrome/browser/ui/sync/signin_histogram.h
+++ b/chrome/browser/ui/sync/signin_histogram.h
@@ -8,7 +8,7 @@
 namespace signin {
 
 // Enum values used for use with the "Signin.Reauth" histogram.
-enum account_reauth{
+enum AccountReauth {
   // The user gave the wrong email when doing a reauth.
   HISTOGRAM_ACCOUNT_MISSMATCH,
 
@@ -18,6 +18,6 @@ enum account_reauth{
   HISTOGRAM_MAX
 };
 
-}
+}  // namespace signin
 
 #endif  // CHROME_BROWSER_UI_SYNC_SIGNIN_HISTOGRAM_H_