Switch to standard integer types in components/, part 2 of 4.

components/html_viewer/web_clipboard_impl.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 "components/html_viewer/web_clipboard_impl.h"
 
+#include <stddef.h>
+
 #include "base/bind.h"
 #include "components/html_viewer/blink_basic_type_converters.h"
 
 using mojo::Array;
 using mojo::Clipboard;
 using mojo::Map;
 using mojo::String;
 
 namespace html_viewer {
 namespace {
@@ skipping 181 matching lines @@
       return Clipboard::TYPE_COPY_PASTE;
     case BufferSelection:
       return Clipboard::TYPE_SELECTION;
   }
 
   NOTREACHED();
   return Clipboard::TYPE_COPY_PASTE;
 }
 
 }  // namespace html_viewer