Now that unit_tests are clean, fix views_unittests.

ui/views/test/views_test_base.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/test/views_test_base.h"
 
 #include "base/run_loop.h"
+#include "ui/base/clipboard/clipboard.h"
 
 #if defined(USE_AURA)
 #include "ui/aura/env.h"
 #include "ui/aura/test/aura_test_helper.h"
 #endif
 
 namespace views {
 
 ViewsTestBase::ViewsTestBase()
     : setup_called_(false),
@@ skipping 12 matching lines @@
   setup_called_ = true;
   if (!views_delegate_.get())
     views_delegate_.reset(new TestViewsDelegate());
 #if defined(USE_AURA)
   aura_test_helper_.reset(new aura::test::AuraTestHelper(&message_loop_));
   aura_test_helper_->SetUp();
 #endif  // USE_AURA
 }
 
 void ViewsTestBase::TearDown() {
+  ui::Clipboard::DestroyClipboardForCurrentThread();
+
   // Flush the message loop because we have pending release tasks
   // and these tasks if un-executed would upset Valgrind.
   RunPendingMessages();
   teardown_called_ = true;
   views_delegate_.reset();
   testing::Test::TearDown();
 #if defined(USE_AURA)
   aura_test_helper_->TearDown();
 #endif
 }
 
 void ViewsTestBase::RunPendingMessages() {
   base::RunLoop run_loop;
 #if defined(USE_AURA)
   run_loop.set_dispatcher(aura::Env::GetInstance()->GetDispatcher());
 #endif
   run_loop.RunUntilIdle();
 }
 
 }  // namespace views