Make it compile on Linux

src/platform/linux/mod.rs

@@ -1,71 +1,7 @@
 #![cfg(any(target_os = "linux", target_os = "dragonfly", target_os = "freebsd"))]
 
-use Api;
-use ContextError;
-use CreationError;
-use GlAttributes;
-use GlContext;
-use PixelFormat;
-use PixelFormatRequirements;
-
-use api::osmesa::{self, OsMesaContext};
-
 pub use self::api_dispatch::{Window, WindowProxy, MonitorId, get_available_monitors, get_primary_monitor};
 pub use self::api_dispatch::{WaitEventsIterator, PollEventsIterator};
 pub use self::api_dispatch::PlatformSpecificWindowBuilderAttributes;
+
 mod api_dispatch;
-
-#[derive(Default)]
-pub struct PlatformSpecificHeadlessBuilderAttributes;
-
-pub struct HeadlessContext(OsMesaContext);
-
-impl HeadlessContext {
-    pub fn new(dimensions: (u32, u32), pf_reqs: &PixelFormatRequirements,
-               opengl: &GlAttributes<&HeadlessContext>,
-               _: &PlatformSpecificHeadlessBuilderAttributes)
-               -> Result<HeadlessContext, CreationError>
-    {
-        let opengl = opengl.clone().map_sharing(|c| &c.0);
-
-        match OsMesaContext::new(dimensions, pf_reqs, &opengl) {
-            Ok(c) => return Ok(HeadlessContext(c)),
-            Err(osmesa::OsMesaCreationError::NotSupported) => (),
-            Err(osmesa::OsMesaCreationError::CreationError(e)) => return Err(e),
-        };
-
-        Err(CreationError::NotSupported)
-    }
-}
-
-impl GlContext for HeadlessContext {
-    #[inline]
-    unsafe fn make_current(&self) -> Result<(), ContextError> {
-        self.0.make_current()
-    }
-
-    #[inline]
-    fn is_current(&self) -> bool {
-        self.0.is_current()
-    }
-
-    #[inline]
-    fn get_proc_address(&self, addr: &str) -> *const () {
-        self.0.get_proc_address(addr)
-    }
-
-    #[inline]
-    fn swap_buffers(&self) -> Result<(), ContextError> {
-        self.0.swap_buffers()
-    }
-
-    #[inline]
-    fn get_api(&self) -> Api {
-        self.0.get_api()
-    }
-
-    #[inline]
-    fn get_pixel_format(&self) -> PixelFormat {
-        self.0.get_pixel_format()
-    }
-}