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

ui/views/controls/textfield/native_textfield_views.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/views/controls/textfield/native_textfield_views.h"
 
 #include <algorithm>
 #include <set>
 
 #include "base/bind.h"
@@ skipping 568 matching lines @@
 
 bool NativeTextfieldViews::IsCommandIdEnabled(int command_id) const {
   bool editable = !textfield_->read_only();
   string16 result;
   switch (command_id) {
     case IDS_APP_CUT:
       return editable && model_->HasSelection() && !textfield_->IsObscured();
     case IDS_APP_COPY:
       return model_->HasSelection() && !textfield_->IsObscured();
     case IDS_APP_PASTE:
-      ViewsDelegate::views_delegate->GetClipboard()
+      ui::Clipboard::GetForCurrentThread()
           ->ReadText(ui::Clipboard::BUFFER_STANDARD, &result);
       return editable && !result.empty();
     case IDS_APP_DELETE:
       return editable && model_->HasSelection();
     case IDS_APP_SELECT_ALL:
       return true;
     default:
       return textfield_->GetController()->IsCommandIdEnabled(command_id);
   }
 }
@@ skipping 619 matching lines @@
   // Filter out all control characters, including tab and new line characters,
   // and all characters with Alt modifier. But we need to allow characters with
   // AltGr modifier.
   // On Windows AltGr is represented by Alt+Ctrl, and on Linux it's a different
   // flag that we don't care about.
   return ((ch >= 0x20 && ch < 0x7F) || ch > 0x9F) &&
       (flags & ~(ui::EF_SHIFT_DOWN | ui::EF_CAPS_LOCK_DOWN)) != ui::EF_ALT_DOWN;
 }
 
 }  // namespace views