Implement the inline signin confirmation bubble and mirror upgrade tutorial

chrome/browser/ui/webui/signin/login_ui_service.h

Index: chrome/browser/ui/webui/signin/login_ui_service.h
diff --git a/chrome/browser/ui/webui/signin/login_ui_service.h b/chrome/browser/ui/webui/signin/login_ui_service.h
index 99dc03c711d93e4b36454dbf7be7e97a7c784b70..0e52d09b6b22c9b33aa684764d4648c541269926 100644
--- a/chrome/browser/ui/webui/signin/login_ui_service.h
+++ b/chrome/browser/ui/webui/signin/login_ui_service.h
@@ -12,8 +12,8 @@
 class Browser;
 class Profile;
 
-// The LoginUIService helps track per-profile information for the login UI -
-// for example, whether there is login UI currently on-screen.
+// The LoginUIService helps track per-profile information for the login related
+// UIs - for example, whether there is login UI currently on-screen.
 class LoginUIService : public KeyedService {
  public:
   // Various UI components implement this API to allow LoginUIService to
@@ -35,11 +35,16 @@ class LoginUIService : public KeyedService {
    public:
     // Called when a new login UI is shown.
     // |ui| The login UI that was just shown. Will never be null.
-    virtual void OnLoginUIShown(LoginUI* ui) = 0;
+    virtual void OnLoginUIShown(LoginUI* ui) {}
 
     // Called when a login UI is closed.
     // |ui| The login UI that was just closed; will never be null.
-    virtual void OnLoginUIClosed(LoginUI* ui) = 0;
+    virtual void OnLoginUIClosed(LoginUI* ui) {}
+
+    // Called when the sync confirmation UI is closed. |configure_sync_first|
+    // is true if the user has requested to configure the sync settings before
+    // sync starts.
+    virtual void OnSyncConfirmationUIClosed(bool configure_sync_first) {}
 
    protected:
     virtual ~Observer() {}
@@ -65,6 +70,9 @@ class LoginUIService : public KeyedService {
   // sets current_login_ui() to null.
   void LoginUIClosed(LoginUI* ui);
 
+  // Called when the sync settings confirmation UI is closed.
+  void SyncConfirmationUIClosed(bool configure_sync_first);
+
   // Delegate to an existing login dialog if one exists.
   // If not, we make a new popup dialog window, and set it to
   // chrome://signin to ask the user to sign in to chrome.