Add a `profile_traits` crate to reduce compile times.

A rebuild after touching components/profile/mem.rs now takes 48 seconds (and
only rebuilds `profile` and `servo`) which is much lower than it used to be.
In comparison, a rebuild after touching components/profile_traits/mem.rs takes
294 seconds and rebuilds many more crates.

This change also removes some unnecessary crate dependencies in `net` and
`net_traits`.

1 files changed, 3 insertions, 3 deletions

diff --git a/components/layout_traits/lib.rs b/components/layout_traits/lib.rs
index 406730f65d7..f37cfa194bb 100644
--- a/components/layout_traits/lib.rs
+++ b/components/layout_traits/lib.rs
@@ -5,7 +5,7 @@
 extern crate gfx;
 extern crate script_traits;
 extern crate msg;
-extern crate profile;
+extern crate profile_traits;
 extern crate net_traits;
 extern crate url;
 extern crate util;
@@ -18,8 +18,8 @@ extern crate util;
 use gfx::font_cache_task::FontCacheTask;
 use gfx::paint_task::PaintChan;
 use msg::constellation_msg::{ConstellationChan, Failure, PipelineId, PipelineExitType};
-use profile::mem;
-use profile::time;
+use profile_traits::mem;
+use profile_traits::time;
 use net_traits::ResourceTask;
 use net_traits::image_cache_task::ImageCacheTask;
 use url::Url;