MacViews: Makes a USE_ASH guard in chrome_views_delegate.h match the .cc

BUG=390755

Review URL: https://codereview.chromium.org/394903003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@283966 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/ui/views/chrome_views_delegate.h

@@ -40,8 +40,10 @@ class ChromeViewsDelegate : public views::ViewsDelegate {
   virtual gfx::ImageSkia* GetDefaultWindowIcon() const OVERRIDE;
 #endif
 
+#if defined(USE_ASH)
   virtual views::NonClientFrameView* CreateDefaultNonClientFrameView(
       views::Widget* widget) OVERRIDE;
+#endif
   virtual void AddRef() OVERRIDE;
   virtual void ReleaseRef() OVERRIDE;
   virtual void OnBeforeWidgetInit(