Fix HTML5 effectAllowed and dragEffect on Chrome Linux.

app/gtk_dnd_util.cc

 // Copyright (c) 2009 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 "app/gtk_dnd_util.h"
 
 #include "base/logging.h"
 #include "base/pickle.h"
 #include "base/utf_string_conversions.h"
 #include "googleurl/src/gurl.h"
@@ skipping 208 matching lines @@
   for (size_t i = 0; uris[i] != NULL; ++i) {
     GURL url(uris[i]);
     if (url.is_valid())
       urls->push_back(url);
   }
 
   g_strfreev(uris);
   return true;
 }
 
+GdkDragAction WebDragOpToGdkDragAction(WebKit::WebDragOperationsMask op) {
+  GdkDragAction action = static_cast<GdkDragAction>(0);
+  if (op & WebKit::WebDragOperationCopy)
+    action = static_cast<GdkDragAction>(action | GDK_ACTION_COPY);
+  if (op & WebKit::WebDragOperationLink)
+    action = static_cast<GdkDragAction>(action | GDK_ACTION_LINK);
+  if (op & WebKit::WebDragOperationMove)
+    action = static_cast<GdkDragAction>(action | GDK_ACTION_MOVE);
+  return action;
+}
+
 }  // namespace gtk_dnd_util