mojo api for view based lockscreen

chrome/browser/chromeos/login/lock/screen_locker.cc

Index: chrome/browser/chromeos/login/lock/screen_locker.cc
diff --git a/chrome/browser/chromeos/login/lock/screen_locker.cc b/chrome/browser/chromeos/login/lock/screen_locker.cc
index 0d1730e08e86ce9b4f0b21de6a0a4a69c68935c2..85d5b42aea36671c9f42a940fb32209ab6dafc93 100644
--- a/chrome/browser/chromeos/login/lock/screen_locker.cc
+++ b/chrome/browser/chromeos/login/lock/screen_locker.cc
@@ -42,6 +42,7 @@
 #include "chrome/browser/signin/easy_unlock_service.h"
 #include "chrome/browser/signin/signin_manager_factory.h"
 #include "chrome/browser/ui/ash/ash_util.h"
+#include "chrome/browser/ui/ash/lock_screen_client_chromeos.h"
 #include "chrome/browser/ui/ash/session_controller_client.h"
 #include "chrome/browser/ui/webui/chromeos/login/screenlock_icon_provider.h"
 #include "chrome/browser/ui/webui/chromeos/login/screenlock_icon_source.h"
@@ -292,6 +293,9 @@ void ScreenLocker::OnAuthFailure(const AuthFailure& error) {
                                   ? IDS_LOGIN_ERROR_AUTHENTICATING_2ND_TIME
                                   : IDS_LOGIN_ERROR_AUTHENTICATING,
                               HelpAppLauncher::HELP_CANT_ACCESS_ACCOUNT);
+  // TODO(xiaoyinh@): This call should replace delegate_->ShowErrorMessage
+  // above when the implementation is complete.
+  LockScreenClientChromeOS::Get()->ShowErrorMessage();

[jdufault, 2017/05/11 01:14:51]

Can you make another delegate_ implementation that calls the mojo methods? Then
if we are showing views lock screen, install the new delegate_ and hopefully we
will only need minimal code changes here.

[xiaoyinh(OOO Sep 11-29), 2017/05/11 20:29:52]

How about reuse StubDelegate in the above?

[jdufault, 2017/05/11 20:34:06]

sg, please rename it to MojoDelegate or similar.

 
   if (auth_status_consumer_)
     auth_status_consumer_->OnAuthFailure(error);