Further ChromeOS support: Detect removable media mounted through ChromeOS

src/slic3r/GUI/OpenGLManager.cpp

@@ -256,11 +256,13 @@ bool OpenGLManager::init_gl()
         }
 
         if (valid_version) {
+#ifdef __linux__
             if (s_gl_info.get_renderer() == "virgl")
                 // Disable multi-sampling with virgl (VirtualGL) on Linux.
                 // Namely, on ChromeOS virgl flips red/blue channels at least on some computers with multi-sampling enabled.
                 // It seems it is sufficient to disable multi-sampling after the OpenGL context is created.
                 s_multisample = EMultisampleState::Disabled;
+#endif // __linux__
             // load shaders
             auto [result, error] = m_shaders_manager.init();
             if (!result) {