Auto merge of #21672 - kingdido999:master, r=jdm

Format components metrics and msg #21373

```bash
rustfmt components/metrics/lib.rs
rustfmt components/msg/*.rs
rustfmt components/msg/tests/*.rs
```

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---
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components/metrics/lib.rs

@@ -64,14 +64,14 @@ fn set_metric<U: ProgressiveWebMetric>(
     category: ProfilerCategory,
     attr: &Cell<Option<u64>>,
     metric_time: Option<u64>,
-    url: &ServoUrl)
-{
+    url: &ServoUrl,
+) {
     let navigation_start = match pwm.get_navigation_start() {
         Some(time) => time,
         None => {
             warn!("Trying to set metric before navigation start");
             return;
-        }
+        },
     };
     let now = match metric_time {
         Some(time) => time,
@@ -96,10 +96,12 @@ fn set_metric<U: ProgressiveWebMetric>(
 
     // Print the metric to console if the print-pwm option was given.
     if opts::get().print_pwm {
-        println!("Navigation start: {}", pwm.get_navigation_start().unwrap().to_ms());
+        println!(
+            "Navigation start: {}",
+            pwm.get_navigation_start().unwrap().to_ms()
+        );
         println!("{:?} {:?} {:?}", url, metric_type, time.to_ms());
     }
-
 }
 
 // spec: https://github.com/WICG/time-to-interactive
@@ -120,7 +122,7 @@ pub struct InteractiveMetrics {
     time_to_interactive: Cell<Option<u64>>,
     #[ignore_malloc_size_of = "can't measure channels"]
     time_profiler_chan: ProfilerChan,
-    url: ServoUrl
+    url: ServoUrl,
 }
 
 #[derive(Clone, Copy, Debug, MallocSizeOf)]
@@ -128,7 +130,6 @@ pub struct InteractiveWindow {
     start: u64,
 }
 
-
 impl InteractiveWindow {
     pub fn new() -> InteractiveWindow {
         InteractiveWindow {
@@ -194,11 +195,8 @@ impl InteractiveMetrics {
 
     // can set either dlc or tti first, but both must be set to actually calc metric
     // when the second is set, set_tti is called with appropriate time
-    pub fn maybe_set_tti<T>(
-        &self,
-        profiler_metadata_factory: &T,
-        metric: InteractiveFlag,
-    ) where
+    pub fn maybe_set_tti<T>(&self, profiler_metadata_factory: &T, metric: InteractiveFlag)
+    where
         T: ProfilerMetadataFactory,
     {
         if self.get_tti().is_some() {
@@ -212,7 +210,7 @@ impl InteractiveMetrics {
         let dcl = self.dom_content_loaded.get();
         let mta = self.main_thread_available.get();
         let (dcl, mta) = match (dcl, mta) {
-        (Some(dcl), Some(mta)) => (dcl, mta),
+            (Some(dcl), Some(mta)) => (dcl, mta),
             _ => return,
         };
         let metric_time = match dcl.partial_cmp(&mta) {
@@ -249,7 +247,7 @@ impl ProgressiveWebMetric for InteractiveMetrics {
         self.navigation_start = Some(time);
     }
 
-    fn send_queued_constellation_msg(&self, _name: ProgressiveWebMetricType, _time: u64) { }
+    fn send_queued_constellation_msg(&self, _name: ProgressiveWebMetricType, _time: u64) {}
 
     fn get_time_profiler_chan(&self) -> &ProfilerChan {
         &self.time_profiler_chan
@@ -279,8 +277,8 @@ impl PaintTimeMetrics {
         time_profiler_chan: ProfilerChan,
         constellation_chan: IpcSender<LayoutMsg>,
         script_chan: IpcSender<ConstellationControlMsg>,
-        url: ServoUrl)
-            -> PaintTimeMetrics {
+        url: ServoUrl,
+    ) -> PaintTimeMetrics {
         PaintTimeMetrics {
             pending_metrics: RefCell::new(HashMap::new()),
             navigation_start: None,
@@ -317,17 +315,22 @@ impl PaintTimeMetrics {
         &self,
         profiler_metadata_factory: &T,
         epoch: Epoch,
-        display_list: &DisplayList)
-    where T: ProfilerMetadataFactory {
+        display_list: &DisplayList,
+    ) where
+        T: ProfilerMetadataFactory,
+    {
         if self.first_paint.get().is_some() && self.first_contentful_paint.get().is_some() {
             // If we already set all paint metrics, we just bail out.
             return;
         }
 
-        self.pending_metrics.borrow_mut().insert(epoch, (
-            profiler_metadata_factory.new_metadata(),
-            display_list.is_contentful(),
-        ));
+        self.pending_metrics.borrow_mut().insert(
+            epoch,
+            (
+                profiler_metadata_factory.new_metadata(),
+                display_list.is_contentful(),
+            ),
+        );
 
         // Send the pending metric information to the compositor thread.
         // The compositor will record the current time after painting the
@@ -340,7 +343,8 @@ impl PaintTimeMetrics {
 
     pub fn maybe_set_metric(&self, epoch: Epoch, paint_time: u64) {
         if self.first_paint.get().is_some() && self.first_contentful_paint.get().is_some() ||
-            self.navigation_start.is_none() {
+            self.navigation_start.is_none()
+        {
             // If we already set all paint metrics or we have not set navigation start yet,
             // we just bail out.
             return;

components/msg/constellation_msg.rs

@@ -224,17 +224,21 @@ impl PipelineNamespace {
 
 thread_local!(pub static PIPELINE_NAMESPACE: Cell<Option<PipelineNamespace>> = Cell::new(None));
 
-#[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, MallocSizeOf, Ord, PartialEq, PartialOrd, Serialize)]
+#[derive(
+    Clone, Copy, Debug, Deserialize, Eq, Hash, MallocSizeOf, Ord, PartialEq, PartialOrd, Serialize,
+)]
 pub struct PipelineNamespaceId(pub u32);
 
 #[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, Ord, PartialEq, PartialOrd, Serialize)]
 pub struct PipelineIndex(pub NonZeroU32);
 malloc_size_of_is_0!(PipelineIndex);
 
-#[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, MallocSizeOf, Ord, PartialEq, PartialOrd, Serialize)]
+#[derive(
+    Clone, Copy, Debug, Deserialize, Eq, Hash, MallocSizeOf, Ord, PartialEq, PartialOrd, Serialize,
+)]
 pub struct PipelineId {
     pub namespace_id: PipelineNamespaceId,
-    pub index: PipelineIndex
+    pub index: PipelineIndex,
 }
 
 impl PipelineId {
@@ -289,7 +293,9 @@ impl fmt::Display for PipelineId {
 pub struct BrowsingContextIndex(pub NonZeroU32);
 malloc_size_of_is_0!(BrowsingContextIndex);
 
-#[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, MallocSizeOf, Ord, PartialEq, PartialOrd, Serialize)]
+#[derive(
+    Clone, Copy, Debug, Deserialize, Eq, Hash, MallocSizeOf, Ord, PartialEq, PartialOrd, Serialize,
+)]
 pub struct BrowsingContextId {
     pub namespace_id: PipelineNamespaceId,
     pub index: BrowsingContextIndex,
@@ -316,7 +322,9 @@ impl fmt::Display for BrowsingContextId {
 
 thread_local!(pub static TOP_LEVEL_BROWSING_CONTEXT_ID: Cell<Option<TopLevelBrowsingContextId>> = Cell::new(None));
 
-#[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, MallocSizeOf, Ord, PartialEq, PartialOrd, Serialize)]
+#[derive(
+    Clone, Copy, Debug, Deserialize, Eq, Hash, MallocSizeOf, Ord, PartialEq, PartialOrd, Serialize,
+)]
 pub struct TopLevelBrowsingContextId(BrowsingContextId);
 
 impl TopLevelBrowsingContextId {
@@ -362,7 +370,9 @@ impl PartialEq<BrowsingContextId> for TopLevelBrowsingContextId {
 pub struct HistoryStateIndex(pub NonZeroU32);
 malloc_size_of_is_0!(HistoryStateIndex);
 
-#[derive(Clone, Copy, Debug, Deserialize, Eq, Hash, MallocSizeOf, Ord, PartialEq, PartialOrd, Serialize)]
+#[derive(
+    Clone, Copy, Debug, Deserialize, Eq, Hash, MallocSizeOf, Ord, PartialEq, PartialOrd, Serialize,
+)]
 pub struct HistoryStateId {
     pub namespace_id: PipelineNamespaceId,
     pub index: HistoryStateIndex,
@@ -390,13 +400,19 @@ impl fmt::Display for HistoryStateId {
 // We provide ids just for unit testing.
 pub const TEST_NAMESPACE: PipelineNamespaceId = PipelineNamespaceId(1234);
 #[allow(unsafe_code)]
-pub const TEST_PIPELINE_INDEX: PipelineIndex = unsafe { PipelineIndex(NonZeroU32::new_unchecked(5678)) };
-pub const TEST_PIPELINE_ID: PipelineId = PipelineId { namespace_id: TEST_NAMESPACE, index: TEST_PIPELINE_INDEX };
+pub const TEST_PIPELINE_INDEX: PipelineIndex =
+    unsafe { PipelineIndex(NonZeroU32::new_unchecked(5678)) };
+pub const TEST_PIPELINE_ID: PipelineId = PipelineId {
+    namespace_id: TEST_NAMESPACE,
+    index: TEST_PIPELINE_INDEX,
+};
 #[allow(unsafe_code)]
 pub const TEST_BROWSING_CONTEXT_INDEX: BrowsingContextIndex =
     unsafe { BrowsingContextIndex(NonZeroU32::new_unchecked(8765)) };
-pub const TEST_BROWSING_CONTEXT_ID: BrowsingContextId =
-    BrowsingContextId { namespace_id: TEST_NAMESPACE, index: TEST_BROWSING_CONTEXT_INDEX };
+pub const TEST_BROWSING_CONTEXT_ID: BrowsingContextId = BrowsingContextId {
+    namespace_id: TEST_NAMESPACE,
+    index: TEST_BROWSING_CONTEXT_INDEX,
+};
 
 // Used to specify the kind of input method editor appropriate to edit a field.
 // This is a subset of htmlinputelement::InputType because some variants of InputType

components/msg/lib.rs

@@ -6,9 +6,12 @@
 
 #[macro_use]
 extern crate bitflags;
-#[macro_use] extern crate malloc_size_of;
-#[macro_use] extern crate malloc_size_of_derive;
-#[macro_use] extern crate serde;
+#[macro_use]
+extern crate malloc_size_of;
+#[macro_use]
+extern crate malloc_size_of_derive;
+#[macro_use]
+extern crate serde;
 extern crate webrender_api;
 
 pub mod constellation_msg;

components/msg/tests/size_of.rs

@@ -5,7 +5,8 @@
 #![cfg(target_pointer_width = "64")]
 
 extern crate msg;
-#[macro_use] extern crate size_of_test;
+#[macro_use]
+extern crate size_of_test;
 
 use msg::constellation_msg::BrowsingContextId;
 use msg::constellation_msg::PipelineId;
@@ -14,6 +15,18 @@ use msg::constellation_msg::TopLevelBrowsingContextId;
 size_of_test!(test_size_of_pipeline_id, PipelineId, 8);
 size_of_test!(test_size_of_optional_pipeline_id, Option<PipelineId>, 8);
 size_of_test!(test_size_of_browsing_context_id, BrowsingContextId, 8);
-size_of_test!(test_size_of_optional_browsing_context_id, Option<BrowsingContextId>, 8);
-size_of_test!(test_size_of_top_level_browsing_context_id, TopLevelBrowsingContextId, 8);
-size_of_test!(test_size_of_top_level_optional_browsing_context_id, Option<TopLevelBrowsingContextId>, 8);
+size_of_test!(
+    test_size_of_optional_browsing_context_id,
+    Option<BrowsingContextId>,
+    8
+);
+size_of_test!(
+    test_size_of_top_level_browsing_context_id,
+    TopLevelBrowsingContextId,
+    8
+);
+size_of_test!(
+    test_size_of_top_level_optional_browsing_context_id,
+    Option<TopLevelBrowsingContextId>,
+    8
+);