Move profiler code from util into a new crate profile.

- Most of util::memory has been moved into profile::mem, though the
  `SizeOf` trait and related things remain in util::memory. The
  `SystemMemoryReporter` code is now in a submodule
  profile::mem::system_reporter.

- util::time has been moved entirely into profile::time.

components/gfx/Cargo.toml

@@ -20,6 +20,9 @@ path = "../util"
 [dependencies.msg]
 path = "../msg"
 
+[dependencies.profile]
+path = "../profile"
+
 [dependencies.style]
 path = "../style"
 

components/gfx/lib.rs

@@ -27,6 +27,7 @@ extern crate layers;
 extern crate libc;
 extern crate stb_image;
 extern crate png;
+extern crate profile;
 extern crate script_traits;
 extern crate "rustc-serialize" as rustc_serialize;
 extern crate unicode;

components/gfx/paint_task.rs

@@ -25,17 +25,17 @@ use msg::compositor_msg::{LayerMetadata, PaintListener, ScrollPolicy};
 use msg::constellation_msg::Msg as ConstellationMsg;
 use msg::constellation_msg::{ConstellationChan, Failure, PipelineId};
 use msg::constellation_msg::PipelineExitType;
+use profile::time::{TimeProfilerChan, TimeProfilerCategory, profile};
 use skia::SkiaGrGLNativeContextRef;
+use std::mem;
+use std::thread::Builder;
+use std::sync::Arc;
+use std::sync::mpsc::{Receiver, Sender, channel};
 use util::geometry::{Au, ZERO_POINT};
 use util::opts;
 use util::smallvec::SmallVec;
 use util::task::spawn_named_with_send_on_failure;
 use util::task_state;
-use util::time::{TimeProfilerChan, TimeProfilerCategory, profile};
-use std::mem;
-use std::thread::Builder;
-use std::sync::Arc;
-use std::sync::mpsc::{Receiver, Sender, channel};
 
 /// Information about a hardware graphics layer that layout sends to the painting task.
 #[derive(Clone)]