Have ScopedClipboardWriter and Clipboard::WriteObjects take a buffer parameter.

ui/base/clipboard/clipboard_win.cc

Index: ui/base/clipboard/clipboard_win.cc
diff --git a/ui/base/clipboard/clipboard_win.cc b/ui/base/clipboard/clipboard_win.cc
index ec3cd1e806cedf1128a78aadde0bc5887a858aa3..26fa5b01a62bcf8a88acbb882286491121fd1b81 100644
--- a/ui/base/clipboard/clipboard_win.cc
+++ b/ui/base/clipboard/clipboard_win.cc
@@ -206,7 +206,9 @@ Clipboard::~Clipboard() {
   clipboard_owner_ = NULL;
 }
 
-void Clipboard::WriteObjects(const ObjectMap& objects) {
+void Clipboard::WriteObjects(Buffer buffer, const ObjectMap& objects) {
+  DCHECK_EQ(buffer, BUFFER_STANDARD);
+
   ScopedClipboard clipboard;
   if (!clipboard.Acquire(GetClipboardWindow()))
     return;