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

webkit/glue/webplugin.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 WEBKIT_GLUE_WEBPLUGIN_H__
 #define WEBKIT_GLUE_WEBPLUGIN_H__
 
 #include <string>
 #include <vector>
 
@@ skipping 21 matching lines @@
   // Description of the mime type.
   std::wstring description;
 };
 
 
 // Describes an available NPAPI plugin.
 struct WebPluginInfo {
   // The name of the plugin (i.e. Flash).
   std::wstring name;
 
-  // The UTF8 filename of the plugin, without the path.  This may be in a
-  // different case than FilePath on some systems.  On Windows this comes from
-  // the DLL's version information.
-  std::string filename;
-
   // The path to the plugin file (DLL/bundle/library).
   FilePath path;
 
   // The version number of the plugin file (may be OS-specific)
   std::wstring version;
 
   // A description of the plugin that we get from its version info.
   std::wstring desc;
 
   // A list of all the mime types that this plugin supports.
@@ skipping 108 matching lines @@
   virtual void DidReceiveData(const char* buffer, int length, 
                               int data_offset) = 0;
   virtual void DidFinishLoading() = 0;
   virtual void DidFail() = 0;
   virtual bool IsMultiByteResponseExpected() = 0;
 };
 
 
 #endif  // #ifndef WEBKIT_GLUE_WEBPLUGIN_H__