compositing: Split Servo up into multiple sandboxed processes.

Multiprocess mode is enabled with the `-M` switch, and sandboxing is
enabled with the `-S` switch.

components/profile_traits/mem.rs

@@ -25,7 +25,7 @@ impl<T> OpaqueSender<T> for Sender<T> {
 
 /// Front-end representation of the profiler used to communicate with the
 /// profiler.
-#[derive(Clone)]
+#[derive(Clone, Deserialize, Serialize)]
 pub struct ProfilerChan(pub IpcSender<ProfilerMsg>);
 
 impl ProfilerChan {

components/profile_traits/time.rs

@@ -60,15 +60,16 @@ pub enum ProfilerCategory {
     ScriptDevtoolsMsg,
     ScriptDocumentEvent,
     ScriptDomEvent,
+    ScriptEvent,
     ScriptFileRead,
     ScriptImageCacheMsg,
     ScriptInputEvent,
     ScriptNetworkEvent,
     ScriptResize,
-    ScriptEvent,
-    ScriptUpdateReplacedElement,
     ScriptSetViewport,
     ScriptTimerEvent,
+    ScriptStylesheetLoad,
+    ScriptUpdateReplacedElement,
     ScriptWebSocketEvent,
     ScriptWorkerEvent,
     ApplicationHeartbeat,