Revert of Implement ui::ClipboardMus.

ui/base/test/test_clipboard.cc

 // Copyright 2014 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/base/test/test_clipboard.h"
 
 #include <stddef.h>
-#include "base/memory/ptr_util.h"
 #include "base/numerics/safe_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 
 namespace ui {
 
 TestClipboard::TestClipboard()
     : default_store_type_(CLIPBOARD_TYPE_COPY_PASTE) {
 }
 
 TestClipboard::~TestClipboard() {
 }
 
 Clipboard* TestClipboard::CreateForCurrentThread() {
   base::AutoLock lock(Clipboard::clipboard_map_lock_.Get());
   Clipboard* clipboard = new TestClipboard;
   Clipboard::clipboard_map_.Get()[base::PlatformThread::CurrentId()] =
-      base::WrapUnique(clipboard);
+      clipboard;
   return clipboard;
 }
 
 uint64_t TestClipboard::GetSequenceNumber(ClipboardType type) const {
   return GetStore(type).sequence_number;
 }
 
 bool TestClipboard::IsFormatAvailable(const FormatType& format,
                                       ClipboardType type) const {
   const DataStore& store = GetStore(type);
@@ skipping 174 matching lines @@
 
 const TestClipboard::DataStore& TestClipboard::GetDefaultStore() const {
   return GetStore(default_store_type_);
 }
 
 TestClipboard::DataStore& TestClipboard::GetDefaultStore() {
   return GetStore(default_store_type_);
 }
 
 }  // namespace ui