Revert 183123

ui/base/clipboard/scoped_clipboard_writer.cc

Index: ui/base/clipboard/scoped_clipboard_writer.cc
===================================================================
--- ui/base/clipboard/scoped_clipboard_writer.cc	(revision 183210)
+++ ui/base/clipboard/scoped_clipboard_writer.cc	(working copy)
@@ -17,21 +17,12 @@
 ScopedClipboardWriter::ScopedClipboardWriter(Clipboard* clipboard,
                                              Clipboard::Buffer buffer)
     : clipboard_(clipboard),
-      buffer_(buffer),
-      source_tag_() {
+      buffer_(buffer) {
 }
 
-ScopedClipboardWriter::ScopedClipboardWriter(Clipboard* clipboard,
-                                             Clipboard::Buffer buffer,
-                                             Clipboard::SourceTag source_tag)
-    : clipboard_(clipboard),
-      buffer_(buffer),
-      source_tag_(source_tag) {
-}
-
 ScopedClipboardWriter::~ScopedClipboardWriter() {
   if (!objects_.empty() && clipboard_)
-    clipboard_->WriteObjects(buffer_, objects_, source_tag_);
+    clipboard_->WriteObjects(buffer_, objects_);
 }
 
 void ScopedClipboardWriter::WriteText(const string16& text) {