POSIX: Get render_process_host to build.

chrome/browser/resource_message_filter.h

Index: chrome/browser/resource_message_filter.h
diff --git a/chrome/browser/resource_message_filter.h b/chrome/browser/resource_message_filter.h
index 640b13805e712d6c00f1654e4d77551f9d106a0e..0d353da106c727ac716a39d4e1fd622c8a496403 100644
--- a/chrome/browser/resource_message_filter.h
+++ b/chrome/browser/resource_message_filter.h
@@ -104,9 +104,12 @@ class ResourceMessageFilter : public IPC::ChannelProxy::MessageFilter,
                           const std::wstring& filter,
                           uint32 user_data);
 
+#if defined(OS_WIN)
   // Cache fonts for the renderer. See ResourceMessageFilter::OnLoadFont
   // implementation for more details
   void OnLoadFont(LOGFONT font);
+#endif
+
   void OnGetScreenInfo(gfx::NativeView window,
                        webkit_glue::ScreenInfo* results);
   void OnGetPlugins(bool refresh, std::vector<WebPluginInfo>* plugins);