Lock profile before sign in when force sign in is enabled.

chrome/browser/signin/chrome_signin_client.cc

Index: chrome/browser/signin/chrome_signin_client.cc
diff --git a/chrome/browser/signin/chrome_signin_client.cc b/chrome/browser/signin/chrome_signin_client.cc
index 3d823cc5a5cf0d803e9c192547c582e761314550..6ed489bc12c966857e3ed93982e0ef4fffbbe6b3 100644
--- a/chrome/browser/signin/chrome_signin_client.cc
+++ b/chrome/browser/signin/chrome_signin_client.cc
@@ -454,7 +454,7 @@ void ChromeSigninClient::LockProfile(const base::FilePath& profile_path) {
           .GetProfileAttributesWithPath(profile_->GetPath(), &entry);
   if (!has_entry)
     return;
-  entry->SetIsSigninRequired(true);
+  entry->LockForceSigninProfile(true);

[anthonyvd, 2016/11/04 21:31:02]

Why isn't this still just SetIsSigninRequired considering that function calls
LockForceSigninProfile?  Doesn't this break non-force-signin lock?

[zmin, 2016/11/04 22:11:53]

LockProfile() is a function I added recently and will only be called for
force-sign-in sign out.

Yes, I agree that the function name confuses people after this change. So I'll
change that.

 }
 
 void ChromeSigninClient::ShowUserManager(const base::FilePath& profile_path) {