Aura: Support hovering restore & close buttons for full screen apps

chrome/browser/ui/browser_tab_restore_service_delegate.h

 // Copyright (c) 2011 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 CHROME_BROWSER_UI_BROWSER_TAB_RESTORE_SERVICE_DELEGATE_H_
 #define CHROME_BROWSER_UI_BROWSER_TAB_RESTORE_SERVICE_DELEGATE_H_
 
 #include <string>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "chrome/browser/sessions/tab_restore_service_delegate.h"
 
 class Browser;
 
 // Implementation of TabRestoreServiceDelegate which uses an instance of
 // Browser in order to fulfil its duties.
 class BrowserTabRestoreServiceDelegate : public TabRestoreServiceDelegate {
  public:
   explicit BrowserTabRestoreServiceDelegate(Browser* browser)
       : browser_(browser) {}
   virtual ~BrowserTabRestoreServiceDelegate() {}
 
   // Overridden from TabRestoreServiceDelegate:
   virtual void ShowBrowserWindow() OVERRIDE;
   virtual const SessionID& GetSessionID() const OVERRIDE;
   virtual int GetTabCount() const OVERRIDE;
   virtual int GetSelectedIndex() const OVERRIDE;
+  virtual std::string GetAppName() const OVERRIDE;
   virtual content::WebContents* GetWebContentsAt(int index) const OVERRIDE;
   virtual content::WebContents* GetSelectedWebContents() const OVERRIDE;
   virtual bool IsTabPinned(int index) const OVERRIDE;
   virtual content::WebContents* AddRestoredTab(
       const std::vector<TabNavigation>& navigations,
       int tab_index,
       int selected_navigation,
       const std::string& extension_app_id,
       bool select,
       bool pin,
       bool from_last_session,
       content::SessionStorageNamespace* storage_namespace) OVERRIDE;
   virtual void ReplaceRestoredTab(
       const std::vector<TabNavigation>& navigations,
       int selected_navigation,
       bool from_last_session,
       const std::string& extension_app_id,
       content::SessionStorageNamespace* session_storage_namespace) OVERRIDE;
   virtual void CloseTab() OVERRIDE;
 
  private:
   Browser* browser_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserTabRestoreServiceDelegate);
 };
 
 #endif  // CHROME_BROWSER_UI_BROWSER_TAB_RESTORE_SERVICE_DELEGATE_H_