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/layout_task.rs b/components/layout/layout_task.rs
index 6166b95f73b..dbcf03df1b0 100644
--- a/components/layout/layout_task.rs
+++ b/components/layout/layout_task.rs
@@ -42,9 +42,9 @@ use log;
 use msg::compositor_msg::ScrollPolicy;
 use msg::constellation_msg::Msg as ConstellationMsg;
 use msg::constellation_msg::{ConstellationChan, Failure, PipelineExitType, PipelineId};
-use profile::mem::{self, Report, ReportsChan};
-use profile::time::{self, ProfilerMetadata, profile};
-use profile::time::{TimerMetadataFrameType, TimerMetadataReflowType};
+use profile_traits::mem::{self, Report, ReportsChan};
+use profile_traits::time::{self, ProfilerMetadata, profile};
+use profile_traits::time::{TimerMetadataFrameType, TimerMetadataReflowType};
 use net_traits::{load_bytes_iter, ResourceTask};
 use net_traits::image_cache_task::{ImageCacheTask, ImageCacheResult, ImageCacheChan};
 use script::dom::bindings::js::LayoutJS;