[blimp] Add support for having multiple tabs

blimp/client/core/contents/blimp_navigation_controller_impl.h

 // Copyright 2016 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_CORE_CONTENTS_BLIMP_NAVIGATION_CONTROLLER_IMPL_H_
 #define BLIMP_CLIENT_CORE_CONTENTS_BLIMP_NAVIGATION_CONTROLLER_IMPL_H_
 
 #include "base/macros.h"
 #include "blimp/client/core/contents/navigation_feature.h"
 #include "blimp/client/public/contents/blimp_navigation_controller.h"
 #include "url/gurl.h"
 
 class SkBitmap;
 
 namespace blimp {
 namespace client {
 
 class BlimpContentsObserver;
 class BlimpNavigationControllerDelegate;
 
 class BlimpNavigationControllerImpl
     : public BlimpNavigationController,
       public NavigationFeature::NavigationFeatureDelegate {
  public:
   // The life time of |feature| must remain valid throughout |this|.
-  BlimpNavigationControllerImpl(BlimpNavigationControllerDelegate* delegate,
+  BlimpNavigationControllerImpl(int blimp_contents_id,
+                                BlimpNavigationControllerDelegate* delegate,
                                 NavigationFeature* feature);
   ~BlimpNavigationControllerImpl() override;
 
   // BlimpNavigationController implementation.
   void LoadURL(const GURL& url) override;
   void Reload() override;
   bool CanGoBack() const override;
   bool CanGoForward() const override;
   void GoBack() override;
   void GoForward() override;
   const GURL& GetURL() override;
   const std::string& GetTitle();
 
  private:
   // NavigationFeatureDelegate implementation.
   void OnUrlChanged(int tab_id, const GURL& url) override;
   void OnFaviconChanged(int tab_id, const SkBitmap& favicon) override;
   void OnTitleChanged(int tab_id, const std::string& title) override;
   void OnLoadingChanged(int tab_id, bool loading) override;
   void OnPageLoadStatusUpdate(int tab_id, bool completed) override;
 
+  // The ID for the BlimpContentsImpl this is a controller for.
+  int blimp_contents_id_;
+
   // The |navigation_feature_| is responsible for sending and receiving the
   // navigation state to the server over the proto channel.
   NavigationFeature* navigation_feature_;
 
   // The delegate contains functionality required for the navigation controller
   // to function correctly. It is also invoked on relevant state changes of the
   // navigation controller.
   BlimpNavigationControllerDelegate* delegate_;
 
   // The currently active URL.
   GURL current_url_;
 
   // Title of the currently active page.
   std::string current_title_;
 
   DISALLOW_COPY_AND_ASSIGN(BlimpNavigationControllerImpl);
 };
 
 }  // namespace client
 }  // namespace blimp
 
 #endif  // BLIMP_CLIENT_CORE_CONTENTS_BLIMP_NAVIGATION_CONTROLLER_IMPL_H_