ash: Fix building on linux with use_ash turned on.

BUG=none

Review URL: https://codereview.chromium.org/1634263002

Cr-Commit-Position: refs/heads/master@{#371613}

chrome/browser/ui/views/ash/chrome_browser_main_extra_parts_ash.cc

@@ -27,15 +27,6 @@
 #include "chrome/browser/ui/views/select_file_dialog_extension_factory.h"
 #endif
 
-#if !defined(OS_CHROMEOS)
-#include "ui/shell_dialogs/select_file_dialog.h"
-#include "ui/shell_dialogs/shell_dialogs_delegate.h"
-#endif
-
-#if defined(OS_WIN)
-#include "base/win/windows_version.h"
-#endif
-
 #if !defined(OS_CHROMEOS)
 class ScreenTypeDelegateWin : public gfx::ScreenTypeDelegate {
  public: