Change how ui::Clipboard is accessed so there's only one per thread.

ui/views/controls/textfield/native_textfield_win.cc

Index: ui/views/controls/textfield/native_textfield_win.cc
diff --git a/ui/views/controls/textfield/native_textfield_win.cc b/ui/views/controls/textfield/native_textfield_win.cc
index 6baebf64c00cfa612250b7dc058888e8656c8ec9..9e829d8004573d444381a2b9bc0f50d322e6dbd9 100644
--- a/ui/views/controls/textfield/native_textfield_win.cc
+++ b/ui/views/controls/textfield/native_textfield_win.cc
@@ -559,7 +559,7 @@ void NativeTextfieldWin::OnCopy() {
   const string16 text(GetSelectedText());
   if (!text.empty() && ViewsDelegate::views_delegate) {
     ui::ScopedClipboardWriter scw(
-        ViewsDelegate::views_delegate->GetClipboard(),
+        ui::Clipboard::GetForCurrentThread(),
         ui::Clipboard::BUFFER_STANDARD);
     scw.WriteText(text);
   }
@@ -966,7 +966,7 @@ void NativeTextfieldWin::OnPaste() {
   if (textfield_->read_only() || !ViewsDelegate::views_delegate)
     return;
 
-  ui::Clipboard* clipboard = ViewsDelegate::views_delegate->GetClipboard();
+  ui::Clipboard* clipboard = ui::Clipboard::GetForCurrentThread();
   if (!clipboard->IsFormatAvailable(ui::Clipboard::GetPlainTextWFormatType(),
                                     ui::Clipboard::BUFFER_STANDARD))
     return;