Explicitly coerce PostDispatchAction to uint32_t in DispatchEvent()

ui/base/clipboard/clipboard_aurax11.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/base/clipboard/clipboard_aurax11.h"
 
 #include <X11/extensions/Xfixes.h>
 #include <X11/Xatom.h>
 #include <list>
 #include <set>
@@ skipping 553 matching lines @@
       if (clipboard_owner_.CanDispatchPropertyEvent(*xev))
         clipboard_owner_.OnPropertyEvent(*xev);
       if (selection_requestor_.CanDispatchPropertyEvent(*xev))
         selection_requestor_.OnPropertyEvent(*xev);
       break;
     }
     default:
       break;
   }
 
-  return POST_DISPATCH_NONE;
+  return kPostDispatchNone;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 // Various predefined FormatTypes.
 // static
 Clipboard::FormatType Clipboard::GetFormatType(
     const std::string& format_string) {
   return FormatType::Deserialize(format_string);
 }
 
@@ skipping 344 matching lines @@
   if (format.Equals(GetBitmapFormatType()))
     return;
 
   std::vector<unsigned char> bytes(data_data, data_data + data_len);
   scoped_refptr<base::RefCountedMemory> mem(
       base::RefCountedBytes::TakeVector(&bytes));
   aurax11_details_->InsertMapping(format.ToString(), mem);
 }
 
 }  // namespace ui