[Chromecast] Reuse the Aura window manager across receiver apps.

chromecast/browser/cast_content_window.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 CHROMECAST_BROWSER_CAST_CONTENT_WINDOW_H_
 #define CHROMECAST_BROWSER_CAST_CONTENT_WINDOW_H_
 
 #include <memory>
 
 #include "base/macros.h"
 #include "ui/events/event.h"
 
 namespace content {
 class BrowserContext;
 class WebContents;
 }
 
 namespace chromecast {
+class CastWindowManager;
+
 namespace shell {
 
 // Class that represents the "window" a WebContents is displayed in cast_shell.
 // For Linux, this represents an Aura window. For Android, this is a Activity.
 // See CastContentWindowLinux and CastContentWindowAndroid.
 class CastContentWindow {
  public:
   class Delegate {
    public:
     virtual void OnWindowDestroyed() = 0;
     virtual void OnKeyEvent(const ui::KeyEvent& key_event) = 0;
 
    protected:
     virtual ~Delegate() {}
   };
 
   // Creates the platform specific CastContentWindow. |delegate| should outlive
   // the created CastContentWindow.
   static std::unique_ptr<CastContentWindow> Create(
       CastContentWindow::Delegate* delegate);
 
   virtual ~CastContentWindow() {}
 
   // Sets the window's background to be transparent (call before
   // CreateWindowTree).
   virtual void SetTransparent() = 0;
 
   // Creates a full-screen window for |web_contents| and display it.
   // |web_contents| should outlive this CastContentWindow.
-  virtual void ShowWebContents(content::WebContents* web_contents) = 0;
+  virtual void ShowWebContents(content::WebContents* web_contents,
+                               CastWindowManager* window_manager) = 0;
 
   // Creates a WebContents.
   // TODO(derekjchow): remove this function from this class, since it doesn't
   // have anything to do with displaying web_contents.
   virtual std::unique_ptr<content::WebContents> CreateWebContents(
       content::BrowserContext* browser_context) = 0;
 };
 
 }  // namespace shell
 }  // namespace chromecast
 
 #endif  // CHROMECAST_BROWSER_CAST_CONTENT_WINDOW_H_