refactored performance timing to align with updated spec

refactoring with ResourceFetchMetadata

implemented deprecated window.timing functionality

created ResourceTimingListener trait

fixed w3c links in navigation timing

updated include.ini to run resource timing tests on ci

components/net_traits/lib.rs

@@ -35,6 +35,7 @@ use mime::Mime;
 use msg::constellation_msg::HistoryStateId;
 use servo_url::ServoUrl;
 use std::error::Error;
+use time::precise_time_ns;
 use url::percent_encoding;
 
 pub mod blob_url_store;
@@ -157,7 +158,7 @@ pub enum FetchResponseMsg {
     // todo: send more info about the response (or perhaps the entire Response)
     ProcessResponse(Result<FetchMetadata, NetworkError>),
     ProcessResponseChunk(Vec<u8>),
-    ProcessResponseEOF(Result<(), NetworkError>),
+    ProcessResponseEOF(Result<ResourceFetchTiming, NetworkError>),
 }
 
 pub trait FetchTaskTarget {
@@ -207,7 +208,10 @@ pub trait FetchResponseListener {
     fn process_request_eof(&mut self);
     fn process_response(&mut self, metadata: Result<FetchMetadata, NetworkError>);
     fn process_response_chunk(&mut self, chunk: Vec<u8>);
-    fn process_response_eof(&mut self, response: Result<(), NetworkError>);
+    fn process_response_eof(&mut self, response: Result<ResourceFetchTiming, NetworkError>);
+    fn resource_timing(&self) -> &ResourceFetchTiming;
+    fn resource_timing_mut(&mut self) -> &mut ResourceFetchTiming;
+    fn submit_resource_timing(&mut self);
 }
 
 impl FetchTaskTarget for IpcSender<FetchResponseMsg> {
@@ -231,7 +235,9 @@ impl FetchTaskTarget for IpcSender<FetchResponseMsg> {
         if let Some(e) = response.get_network_error() {
             let _ = self.send(FetchResponseMsg::ProcessResponseEOF(Err(e.clone())));
         } else {
-            let _ = self.send(FetchResponseMsg::ProcessResponseEOF(Ok(())));
+            let _ = self.send(FetchResponseMsg::ProcessResponseEOF(Ok(response
+                .get_resource_timing()
+                .clone())));
         }
     }
 }
@@ -248,7 +254,23 @@ impl<T: FetchResponseListener> Action<T> for FetchResponseMsg {
             FetchResponseMsg::ProcessRequestEOF => listener.process_request_eof(),
             FetchResponseMsg::ProcessResponse(meta) => listener.process_response(meta),
             FetchResponseMsg::ProcessResponseChunk(data) => listener.process_response_chunk(data),
-            FetchResponseMsg::ProcessResponseEOF(data) => listener.process_response_eof(data),
+            FetchResponseMsg::ProcessResponseEOF(data) => {
+                match data {
+                    Ok(ref response_resource_timing) => {
+                        // update listener with values from response
+                        *listener.resource_timing_mut() = response_resource_timing.clone();
+                        listener.process_response_eof(Ok(response_resource_timing.clone()));
+                        // TODO timing check https://w3c.github.io/resource-timing/#dfn-timing-allow-check
+
+                        listener.submit_resource_timing();
+                    },
+                    // TODO Resources for which the fetch was initiated, but was later aborted
+                    // (e.g. due to a network error) MAY be included as PerformanceResourceTiming
+                    // objects in the Performance Timeline and MUST contain initialized attribute
+                    // values for processed substeps of the processing model.
+                    Err(e) => listener.process_response_eof(Err(e)),
+                }
+            },
         }
     }
 }
@@ -418,6 +440,55 @@ pub struct ResourceCorsData {
     pub origin: ServoUrl,
 }
 
+#[derive(Clone, Debug, Deserialize, MallocSizeOf, Serialize)]
+pub struct ResourceFetchTiming {
+    pub timing_type: ResourceTimingType,
+    /// Number of redirects until final resource (currently limited to 20)
+    pub redirect_count: u16,
+    pub request_start: u64,
+    pub response_start: u64,
+    // pub response_end: u64,
+    // pub redirect_start: u64,
+    // pub redirect_end: u64,
+    // pub connect_start: u64,
+    // pub connect_end: u64,
+}
+
+pub enum ResourceAttribute {
+    RedirectCount(u16),
+    RequestStart,
+    ResponseStart,
+}
+
+#[derive(Clone, Copy, Debug, Deserialize, MallocSizeOf, PartialEq, Serialize)]
+pub enum ResourceTimingType {
+    Resource,
+    Navigation,
+    Error,
+    None,
+}
+
+impl ResourceFetchTiming {
+    pub fn new(timing_type: ResourceTimingType) -> ResourceFetchTiming {
+        ResourceFetchTiming {
+            timing_type: timing_type,
+            redirect_count: 0,
+            request_start: 0,
+            response_start: 0,
+        }
+    }
+
+    // TODO currently this is being set with precise time ns when it should be time since
+    // time origin (as described in Performance::now)
+    pub fn set_attribute(&mut self, attribute: ResourceAttribute) {
+        match attribute {
+            ResourceAttribute::RedirectCount(count) => self.redirect_count = count,
+            ResourceAttribute::RequestStart => self.request_start = precise_time_ns(),
+            ResourceAttribute::ResponseStart => self.response_start = precise_time_ns(),
+        }
+    }
+}
+
 /// Metadata about a loaded resource, such as is obtained from HTTP headers.
 #[derive(Clone, Debug, Deserialize, MallocSizeOf, Serialize)]
 pub struct Metadata {
@@ -449,6 +520,8 @@ pub struct Metadata {
 
     /// Referrer Policy of the Request used to obtain Response
     pub referrer_policy: Option<ReferrerPolicy>,
+    /// Performance information for navigation events
+    pub timing: Option<ResourceFetchTiming>,
 }
 
 impl Metadata {
@@ -465,6 +538,7 @@ impl Metadata {
             https_state: HttpsState::None,
             referrer: None,
             referrer_policy: None,
+            timing: None,
         }
     }
 
@@ -523,7 +597,7 @@ pub fn load_whole_resource(
                 })
             },
             FetchResponseMsg::ProcessResponseChunk(data) => buf.extend_from_slice(&data),
-            FetchResponseMsg::ProcessResponseEOF(Ok(())) => return Ok((metadata.unwrap(), buf)),
+            FetchResponseMsg::ProcessResponseEOF(Ok(_)) => return Ok((metadata.unwrap(), buf)),
             FetchResponseMsg::ProcessResponse(Err(e)) |
             FetchResponseMsg::ProcessResponseEOF(Err(e)) => return Err(e),
         }