Introduce networking.cast API

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 <memory>
 #include <string>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/values.h"
 #include "components/keyed_service/core/keyed_service.h"
 #include "extensions/common/api/networking_private.h"
 
 namespace extensions {
 
 class NetworkingPrivateDelegateObserver;
 
-namespace api {
-namespace networking_private {
-struct DeviceStateProperties;
-struct VerificationProperties;
-}  // networking_private
-}  // api
-
 // Base class for platform dependent networkingPrivate API implementations.
 // All inputs and results for this class use ONC values. See
 // networking_private.idl for descriptions of the expected inputs and results.
 class NetworkingPrivateDelegate : public KeyedService {
  public:
   using DictionaryCallback =
       base::Callback<void(std::unique_ptr<base::DictionaryValue>)>;
   using VoidCallback = base::Callback<void()>;
   using BoolCallback = base::Callback<void(bool)>;
   using StringCallback = base::Callback<void(const std::string&)>;
@@ skipping 181 matching lines @@
 
   // Interface for UI methods. May be null.
   std::unique_ptr<UIDelegate> ui_delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(NetworkingPrivateDelegate);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_API_NETWORKING_PRIVATE_NETWORKING_PRIVATE_DELEGATE_H_