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

chromecast/browser/cast_content_window_linux.h

Index: chromecast/browser/cast_content_window_linux.h
diff --git a/chromecast/browser/cast_content_window_linux.h b/chromecast/browser/cast_content_window_linux.h
index 98d9c04116fde6b722a45bfa76948d956fa1e84e..1b8582ee02d30b3ef09f87fcd947f916e7d14f6b 100644
--- a/chromecast/browser/cast_content_window_linux.h
+++ b/chromecast/browser/cast_content_window_linux.h
@@ -9,14 +9,9 @@
 
 #include "base/macros.h"
 #include "chromecast/browser/cast_content_window.h"
-#include "chromecast/graphics/cast_vsync_settings.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "ui/events/keycodes/keyboard_codes.h"
 
-namespace aura {
-class WindowTreeHost;
-}
-
 namespace content {
 class BrowserContext;
 class WebContents;
@@ -26,15 +21,15 @@ namespace chromecast {
 namespace shell {
 
 class CastContentWindowLinux : public CastContentWindow,
-                               public content::WebContentsObserver,
-                               public CastVSyncSettings::Observer {
+                               public content::WebContentsObserver {
  public:
   // Removes the window from the screen.
   ~CastContentWindowLinux() override;
 
   // CastContentWindow implementation.
   void SetTransparent() override;
-  void ShowWebContents(content::WebContents* web_contents) override;
+  void ShowWebContents(content::WebContents* web_contents,
+                       CastWindowManager* window_manager) override;
   std::unique_ptr<content::WebContents> CreateWebContents(
       content::BrowserContext* browser_context) override;
 
@@ -46,18 +41,12 @@ class CastContentWindowLinux : public CastContentWindow,
                            const MediaPlayerId& id) override;
   void RenderViewCreated(content::RenderViewHost* render_view_host) override;
 
-  // CastVSyncSettings::Observer implementation:
-  void OnVSyncIntervalChanged(base::TimeDelta interval) override;
-
  private:
   friend class CastContentWindow;
 
   // This class should only be instantiated by CastContentWindow::Create.
   CastContentWindowLinux();
 
-#if defined(USE_AURA)
-  std::unique_ptr<aura::WindowTreeHost> window_tree_host_;
-#endif
   bool transparent_;
 
   DISALLOW_COPY_AND_ASSIGN(CastContentWindowLinux);