Get something in chrome/plugin/ compiling to make Scons happy.

chrome/plugin/npobject_util.cc

 // 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.
 
 #include "chrome/plugin/npobject_util.h"
 
+#if defined(OS_WIN)
 #include "chrome/common/plugin_messages.h"
 #include "chrome/common/win_util.h"
+#endif
+
 #include "chrome/plugin/npobject_proxy.h"
 #include "chrome/plugin/plugin_channel_base.h"
 #include "webkit/glue/plugins/nphostapi.h"
 #include "webkit/glue/plugins/plugin_host.h"
 #include "webkit/glue/webkit_glue.h"
 
 // true if the current process is a plugin process, false if it's a renderer
 // process.
 static bool g_plugin_process;
 
@@ skipping 98 matching lines @@
 void PatchNPNFunctions() {
   g_plugin_process = true;
   NPNetscapeFuncs* funcs = GetHostFunctions();
   NPAPI::PluginHost::Singleton()->PatchNPNetscapeFuncs(funcs);
 }
 
 bool IsPluginProcess() {
   return g_plugin_process;
 }
 
+#if defined(OS_WIN)
 void CreateNPIdentifierParam(NPIdentifier id, NPIdentifier_Param* param) {
   param->identifier = id;
 }
 
 NPIdentifier CreateNPIdentifier(const NPIdentifier_Param& param) {
   return param.identifier;
 }
 
 void CreateNPVariantParam(const NPVariant& variant,
                           PluginChannelBase* channel,
@@ skipping 99 matching lines @@
       break;
     case NPVARIANT_PARAM_OBJECT_POINTER:
       result->type = NPVariantType_Object;
       result->value.objectValue = static_cast<NPObject*>(param.npobject_pointer);
       NPN_RetainObject(result->value.objectValue);
       break;
     default:
       NOTREACHED();
   }
 }
-
+#endif