Implemented inline login dialog for Chrome OS.

ash/system/user/user_accounts_delegate.h

Index: ash/system/user/user_accounts_delegate.h
diff --git a/ash/system/user/user_accounts_delegate.h b/ash/system/user/user_accounts_delegate.h
index b717e83aac24a791265859649b389609169a8722..ae7fb8d758f7d6564ad6d4bad557f1c0bfa76d42 100644
--- a/ash/system/user/user_accounts_delegate.h
+++ b/ash/system/user/user_accounts_delegate.h
@@ -44,7 +44,7 @@ class ASH_EXPORT UserAccountsDelegate {
 
   // Returns display name for given |account_id|. It has form of email but could
   // be uncanonical, e.g. account "test-user@gmail.com" could have display
-  // name "Test-user+AfterPlus@gmail.com".
+  // name "Test-us.er@gmail.com".

[xiyuan, 2014/04/24 21:22:10]

Why changing this? Anything no longer true with the existing comment?

[dzhioev (left Google), 2014/04/24 22:06:20]

Yes, I figured out that GAIA doesn't accept "original_email+something@gmail.com"
emails.

   virtual std::string GetAccountDisplayName(const std::string& account_id) = 0;
 
   // Deletes given |account_id| from the list of user's account. Passing