Simplify mojo_shell since it's now only used for Mandoline.

mojo/services/clipboard/clipboard_apptest.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 "base/bind.h"
 #include "base/run_loop.h"
+#include "mojo/application/application_test_base_chromium.h"
 #include "mojo/common/common_type_converters.h"
 #include "mojo/public/cpp/application/application_impl.h"
-#include "mojo/public/cpp/application/application_test_base.h"
 #include "third_party/mojo_services/src/clipboard/public/interfaces/clipboard.mojom.h"
 
 using mojo::Array;
 using mojo::Clipboard;
 using mojo::Map;
 using mojo::String;
 
 namespace {
 
 void CopyUint64AndEndRunloop(uint64_t* output,
@@ skipping 127 matching lines @@
   EXPECT_EQ(kPlainTextData, data);
 
   Map<String, Array<uint8_t>> mime_data;
   clipboard_->WriteClipboardData(Clipboard::TYPE_COPY_PASTE, mime_data.Pass());
 
   EXPECT_EQ(2ul, GetSequenceNumber());
   EXPECT_FALSE(GetDataOfType(Clipboard::MIME_TYPE_TEXT, &data));
 }
 
 }  // namespace clipboard