Fix layout test failures. Looks like keying the plugins based on OriginalFil...

chrome/common/render_messages.h

 // Copyright (c) 2006-2008 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.
 
 #ifndef CHROME_COMMON_RENDER_MESSAGES_H_
 #define CHROME_COMMON_RENDER_MESSAGES_H_
 
 #include <string>
 #include <vector>
 #include <map>
@@ skipping 1104 matching lines @@
     l->append(L")");
   }
 };
 
 
 template <>
 struct ParamTraits<WebPluginInfo> {
   typedef WebPluginInfo param_type;
   static void Write(Message* m, const param_type& p) {
     WriteParam(m, p.name);
-    WriteParam(m, p.filename);
     WriteParam(m, p.path);
     WriteParam(m, p.version);
     WriteParam(m, p.desc);
     WriteParam(m, p.mime_types);
   }
   static bool Read(const Message* m, void** iter, param_type* r) {
     return
       ReadParam(m, iter, &r->name) &&
-      ReadParam(m, iter, &r->filename) &&
       ReadParam(m, iter, &r->path) &&
       ReadParam(m, iter, &r->version) &&
       ReadParam(m, iter, &r->desc) &&
       ReadParam(m, iter, &r->mime_types);
   }
   static void Log(const param_type& p, std::wstring* l) {
     l->append(L"(");
     LogParam(p.name, l);
     l->append(L", ");
-    LogParam(p.filename, l);
     l->append(L", ");
     LogParam(p.path, l);
     l->append(L", ");
     LogParam(p.version, l);
     l->append(L", ");
     LogParam(p.desc, l);
     l->append(L", ");
     LogParam(p.mime_types, l);
     l->append(L")");
   }
@@ skipping 567 matching lines @@
       ReadParam(m, iter, &p->available_rect);
   }
   static void Log(const param_type& p, std::wstring* l) {
     l->append(L"<webkit_glue::ScreenInfo>");
   }
 };
 
 }  // namespace IPC
 
 #endif  // CHROME_COMMON_RENDER_MESSAGES_H_