Remove clipboard argument from ScopedClipboardWriter constructor.

content/browser/renderer_host/render_widget_host_view_aura.cc

Index: content/browser/renderer_host/render_widget_host_view_aura.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_aura.cc b/content/browser/renderer_host/render_widget_host_view_aura.cc
index 74e624ae9b386071ba1ab04cb5f6b721cbc84424..8376d7b3b054bb65b62042288a5b5d1509561698 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.cc
+++ b/content/browser/renderer_host/render_widget_host_view_aura.cc
@@ -909,9 +909,7 @@ void RenderWidgetHostViewAura::SelectionChanged(const base::string16& text,
   }
 
   // Set the CLIPBOARD_TYPE_SELECTION to the ui::Clipboard.
-  ui::ScopedClipboardWriter clipboard_writer(
-      ui::Clipboard::GetForCurrentThread(),
-      ui::CLIPBOARD_TYPE_SELECTION);
+  ui::ScopedClipboardWriter clipboard_writer(ui::CLIPBOARD_TYPE_SELECTION);
   clipboard_writer.WriteText(text.substr(pos, n));
 #endif  // defined(USE_X11) && !defined(OS_CHROMEOS)
 }