Replace "WINAPI" with platform-independent "API_CALL".

webkit/default_plugin/plugin_main.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.
 
 #include <algorithm>
 #include <string>
 
 #include "third_party/npapi/bindings/npapi.h"
 #include "webkit/glue/plugins/nphostapi.h"
 
 namespace default_plugin {
 
 extern NPNetscapeFuncs* g_browser;
 
 // Standard NPAPI functions.
 NPError NPP_New(NPMIMEType pluginType, NPP instance, uint16 mode, int16 argc,
                 char* argn[], char* argv[], NPSavedData* saved);
 NPError NPP_Destroy(NPP instance, NPSavedData** save);
 NPError NPP_SetWindow(NPP instance, NPWindow* window);
 NPError NPP_NewStream(NPP instance, NPMIMEType type, NPStream* stream,
                       NPBool seekable, uint16* stype);
 NPError NPP_DestroyStream(NPP instance, NPStream* stream, NPReason reason);
 int32 NPP_WriteReady(NPP instance, NPStream* stream);
 int32 NPP_Write(NPP instance, NPStream* stream, int32 offset, int32 len,
                 void* buffer);
 void NPP_URLNotify(NPP instance, const char* url, NPReason reason,
                    void* notifyData);
 int16 NPP_HandleEvent(NPP instance, void* event);
 
-NPError WINAPI NP_GetEntryPoints(NPPluginFuncs* funcs);
-NPError WINAPI NP_Initialize(NPNetscapeFuncs* funcs);
-NPError WINAPI NP_Shutdown(void);
+NPError API_CALL NP_GetEntryPoints(NPPluginFuncs* funcs);
+NPError API_CALL NP_Initialize(NPNetscapeFuncs* funcs);
+NPError API_CALL NP_Shutdown(void);
 
 }  // default_plugin
-