Allow networkingPrivate to request configure UI

extensions/browser/api/networking_private/networking_private_delegate.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef EXTENSIONS_BROWSER_API_NETWORKING_PRIVATE_NETWORKING_PRIVATE_DELEGATE_H_
 #define EXTENSIONS_BROWSER_API_NETWORKING_PRIVATE_NETWORKING_PRIVATE_DELEGATE_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 72 matching lines @@
   // Delegate for forwarding UI requests, e.g. for showing the account UI.
   class UIDelegate {
    public:
     UIDelegate();
     virtual ~UIDelegate();
 
     // Navigate to the acoount details page for the cellular network associated
     // with |guid|.
     virtual void ShowAccountDetails(const std::string& guid) const = 0;
 
+    // Possibly handle a connection failure, e.g. by showing the configuration
+    // UI. Returns true if the error was handled, i.e. the UI was shown.
+    virtual bool HandleConnectFailed(const std::string& guid,
+                                     const std::string error) const = 0;
+
    private:
     DISALLOW_COPY_AND_ASSIGN(UIDelegate);
   };
 
   // If |verify_delegate| is not NULL, the Verify* methods will be forwarded
   // to the delegate. Otherwise they will fail with a NotSupported error.
   explicit NetworkingPrivateDelegate(
       scoped_ptr<VerifyDelegate> verify_delegate);
   ~NetworkingPrivateDelegate() override;
 
@@ skipping 110 matching lines @@
 
   // Interface for UI methods. May be null.
   scoped_ptr<UIDelegate> ui_delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(NetworkingPrivateDelegate);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_API_NETWORKING_PRIVATE_NETWORKING_PRIVATE_DELEGATE_H_