Restructure contents of blimp/client.

blimp/client/session/navigation_feature.h

-// Copyright 2015 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 BLIMP_CLIENT_SESSION_NAVIGATION_FEATURE_H_
-#define BLIMP_CLIENT_SESSION_NAVIGATION_FEATURE_H_
-
-#include "base/containers/small_map.h"
-#include "base/macros.h"
-#include "blimp/client/blimp_client_export.h"
-#include "blimp/net/blimp_message_processor.h"
-
-class GURL;
-class SkBitmap;
-
-namespace blimp {
-namespace client {
-
-// Handles all incoming and outgoing protobuf messages of type
-// RenderWidget::NAVIGATION.  Delegates can be added to be notified of incoming
-// messages.
-class BLIMP_CLIENT_EXPORT NavigationFeature : public BlimpMessageProcessor {
- public:
-  // A delegate to be notified of specific navigation events related to a
-  // a particular tab.
-  class NavigationFeatureDelegate {
-   public:
-    virtual void OnUrlChanged(int tab_id, const GURL& url) = 0;
-    virtual void OnFaviconChanged(int tab_id, const SkBitmap& favicon) = 0;
-    virtual void OnTitleChanged(int tab_id, const std::string& title) = 0;
-    virtual void OnLoadingChanged(int tab_id, bool loading) = 0;
-  };
-
-  NavigationFeature();
-  ~NavigationFeature() override;
-
-  // Set the BlimpMessageProcessor that will be used to send
-  // BlimpMessage::NAVIGATION messages to the engine.
-  void set_outgoing_message_processor(
-      scoped_ptr<BlimpMessageProcessor> processor);
-
-  // Sets a NavigationMessageDelegate to be notified of all navigation messages
-  // for |tab_id| from the engine.
-  void SetDelegate(int tab_id, NavigationFeatureDelegate* delegate);
-  void RemoveDelegate(int tab_id);
-
-  void NavigateToUrlText(int tab_id, const std::string& url_text);
-  void Reload(int tab_id);
-  void GoForward(int tab_id);
-  void GoBack(int tab_id);
-
- private:
-  // BlimpMessageProcessor implementation.
-  void ProcessMessage(scoped_ptr<BlimpMessage> message,
-                      const net::CompletionCallback& callback) override;
-
-  NavigationFeatureDelegate* FindDelegate(const int tab_id);
-
-  typedef base::SmallMap<std::map<int, NavigationFeatureDelegate*>> DelegateMap;
-
-  DelegateMap delegates_;
-
-  // Used to send BlimpMessage::NAVIGATION messages to the engine.
-  scoped_ptr<BlimpMessageProcessor> outgoing_message_processor_;
-
-  DISALLOW_COPY_AND_ASSIGN(NavigationFeature);
-};
-
-}  // namespace client
-}  // namespace blimp
-
-#endif  // BLIMP_CLIENT_SESSION_NAVIGATION_FEATURE_H_