Fixes couple of bugs triggered on chromeos when restoring a tab:

chrome/browser/ui/ash/chrome_shell_delegate.h

Index: chrome/browser/ui/ash/chrome_shell_delegate.h
diff --git a/chrome/browser/ui/ash/chrome_shell_delegate.h b/chrome/browser/ui/ash/chrome_shell_delegate.h
index 31c2ae8e8a56c4ae81c81f0a58137439a6dcc815..9bdc0a4e8b5d571081c11c5d911fd06fd8b9763d 100644
--- a/chrome/browser/ui/ash/chrome_shell_delegate.h
+++ b/chrome/browser/ui/ash/chrome_shell_delegate.h
@@ -104,6 +104,8 @@ class ChromeShellDelegate : public ash::ShellDelegate,
                        const content::NotificationDetails& details) OVERRIDE;
 
  private:
+  class TabRestoreHelper;
+
   void PlatformInit();
 
   // Returns the browser for active ash window if any. Otherwise it searches
@@ -120,6 +122,8 @@ class ChromeShellDelegate : public ash::ShellDelegate,
 
   ChromeLauncherController* launcher_delegate_;
 
+  scoped_ptr<TabRestoreHelper> tab_restore_helper_;
+
   DISALLOW_COPY_AND_ASSIGN(ChromeShellDelegate);
 };