Remove clipboard argument from ScopedClipboardWriter constructor.

ui/views/controls/textfield/textfield_model_unittest.cc

Index: ui/views/controls/textfield/textfield_model_unittest.cc
diff --git a/ui/views/controls/textfield/textfield_model_unittest.cc b/ui/views/controls/textfield/textfield_model_unittest.cc
index f3947ff0c1ce05ff929be2119bf3ebc2cb99f453..0239516fc8dfc3135684a6e64eea2fddd971d428 100644
--- a/ui/views/controls/textfield/textfield_model_unittest.cc
+++ b/ui/views/controls/textfield/textfield_model_unittest.cc
@@ -479,8 +479,8 @@ TEST_F(TextfieldModelTest, Clipboard) {
   ui::Clipboard* clipboard = ui::Clipboard::GetForCurrentThread();
   const base::string16 initial_clipboard_text =
       base::ASCIIToUTF16("initial text");
-  ui::ScopedClipboardWriter(clipboard, ui::CLIPBOARD_TYPE_COPY_PASTE).
-      WriteText(initial_clipboard_text);
+  ui::ScopedClipboardWriter(ui::CLIPBOARD_TYPE_COPY_PASTE)
+      .WriteText(initial_clipboard_text);
 
   base::string16 clipboard_text;
   TextfieldModel model(NULL);