Use a placeholder instead of the default plugin for missing plug-ins on Mac and Linux.

content/common/webkit_param_traits.h

 // Copyright (c) 2011 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.
 
 // This file is used to define IPC::ParamTraits<> specializations for a number
 // of WebKit types so that they can be serialized over IPC.  IPC::ParamTraits<>
 // specializations for basic types (like int and std::string) and types in the
 // 'base' project can be found in ipc/ipc_message_utils.h.  This file contains
 // specializations for types that are used by the content code, and which need
 // manual serialization code.  This is usually because they're not structs with
 // public members.
 
 #ifndef CONTENT_COMMON_WEBKIT_PARAM_TRAITS_H_
 #define CONTENT_COMMON_WEBKIT_PARAM_TRAITS_H_
 #pragma once
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
 #include "content/common/content_export.h"
 #include "ipc/ipc_message_utils.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebInputEvent.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebTextDirection.h"
 #include "webkit/blob/blob_data.h"
 #include "webkit/glue/npruntime_util.h"
 #include "webkit/glue/resource_type.h"
 #include "webkit/glue/webcursor.h"
 #include "webkit/glue/window_open_disposition.h"
+#include "webkit/plugins/webplugininfo.h"
 
 namespace webkit_glue {
 struct PasswordForm;
 struct ResourceDevToolsInfo;
 struct ResourceLoadTimingInfo;
 }
 
 // Define the NPVariant_Param struct and its enum here since it needs manual
 // serialization code.
 enum NPVariant_ParamEnum {
@@ skipping 67 matching lines @@
 
 template <>
 struct ParamTraits<NPIdentifier_Param> {
   typedef NPIdentifier_Param param_type;
   static void Write(Message* m, const param_type& p);
   static bool Read(const Message* m, void** iter, param_type* r);
   static void Log(const param_type& p, std::string* l);
 };
 
 template <>
+struct ParamTraits<webkit::WebPluginMimeType> {
+  typedef webkit::WebPluginMimeType param_type;
+  static void Write(Message* m, const param_type& p);
+  static bool Read(const Message* m, void** iter, param_type* r);
+  static void Log(const param_type& p, std::string* l);
+};
+
+template <>
+struct ParamTraits<webkit::WebPluginInfo> {
+  typedef webkit::WebPluginInfo param_type;
+  static void Write(Message* m, const param_type& p);
+  static bool Read(const Message* m, void** iter, param_type* r);
+  static void Log(const param_type& p, std::string* l);
+};
+
+template <>
 struct ParamTraits<WebCursor> {
   typedef WebCursor param_type;
   static void Write(Message* m, const param_type& p) {
     p.Serialize(m);
   }
   static bool Read(const Message* m, void** iter, param_type* r)  {
     return r->Deserialize(m, iter);
   }
   static void Log(const param_type& p, std::string* l) {
     l->append("<WebCursor>");
@@ skipping 105 matching lines @@
 struct CONTENT_EXPORT ParamTraits<webkit_glue::PasswordForm> {
   typedef webkit_glue::PasswordForm param_type;
   static void Write(Message* m, const param_type& p);
   static bool Read(const Message* m, void** iter, param_type* p);
   static void Log(const param_type& p, std::string* l);
 };
 
 }  // namespace IPC
 
 #endif  // CONTENT_COMMON_WEBKIT_PARAM_TRAITS_H_