constellation: Remove two unused messages to the Constellation (#35972)

This also removes supporting code which becomes unused as well.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>

components/constellation/constellation.rs

@@ -1242,12 +1242,6 @@ where
             FromCompositorMsg::Exit => {
                 self.handle_exit();
             },
-            FromCompositorMsg::GetBrowsingContext(pipeline_id, response_sender) => {
-                self.handle_get_browsing_context(pipeline_id, response_sender);
-            },
-            FromCompositorMsg::GetPipeline(browsing_context_id, response_sender) => {
-                self.handle_get_pipeline(browsing_context_id, response_sender);
-            },
             FromCompositorMsg::GetFocusTopLevelBrowsingContext(resp_chan) => {
                 let _ = resp_chan.send(self.webviews.focused_webview().map(|(id, _)| id));
             },
@@ -4192,49 +4186,6 @@ where
         }
     }
 
-    #[cfg_attr(
-        feature = "tracing",
-        tracing::instrument(skip_all, fields(servo_profiling = true), level = "trace")
-    )]
-    fn handle_get_pipeline(
-        &mut self,
-        browsing_context_id: BrowsingContextId,
-        response_sender: IpcSender<Option<PipelineId>>,
-    ) {
-        let current_pipeline_id = self
-            .browsing_contexts
-            .get(&browsing_context_id)
-            .map(|browsing_context| browsing_context.pipeline_id);
-        let pipeline_id_loaded = self
-            .pending_changes
-            .iter()
-            .rev()
-            .find(|x| x.browsing_context_id == browsing_context_id)
-            .map(|x| x.new_pipeline_id)
-            .or(current_pipeline_id);
-        if let Err(e) = response_sender.send(pipeline_id_loaded) {
-            warn!("Failed get_pipeline response ({}).", e);
-        }
-    }
-
-    #[cfg_attr(
-        feature = "tracing",
-        tracing::instrument(skip_all, fields(servo_profiling = true), level = "trace")
-    )]
-    fn handle_get_browsing_context(
-        &mut self,
-        pipeline_id: PipelineId,
-        response_sender: IpcSender<Option<BrowsingContextId>>,
-    ) {
-        let browsing_context_id = self
-            .pipelines
-            .get(&pipeline_id)
-            .map(|pipeline| pipeline.browsing_context_id);
-        if let Err(e) = response_sender.send(browsing_context_id) {
-            warn!("Failed get_browsing_context response ({}).", e);
-        }
-    }
-
     #[cfg_attr(
         feature = "tracing",
         tracing::instrument(skip_all, fields(servo_profiling = true), level = "trace")

components/constellation/tracing.rs

@@ -61,8 +61,6 @@ mod from_compositor {
         fn log_target(&self) -> &'static str {
             match self {
                 Self::Exit => target!("Exit"),
-                Self::GetBrowsingContext(..) => target!("GetBrowsingContext"),
-                Self::GetPipeline(..) => target!("GetPipeline"),
                 Self::GetFocusTopLevelBrowsingContext(..) => {
                     target!("GetFocusTopLevelBrowsingContext")
                 },

components/shared/compositing/constellation_msg.rs

@@ -7,7 +7,7 @@ use std::fmt;
 use std::time::Duration;
 
 use base::Epoch;
-use base::id::{BrowsingContextId, PipelineId, WebViewId};
+use base::id::{PipelineId, WebViewId};
 use embedder_traits::{
     Cursor, InputEvent, MediaSessionActionType, Theme, TraversalDirection, WebDriverCommandMsg,
 };
@@ -22,12 +22,6 @@ use webrender_traits::CompositorHitTestResult;
 pub enum ConstellationMsg {
     /// Exit the constellation.
     Exit,
-    /// Request that the constellation send the BrowsingContextId corresponding to the document
-    /// with the provided pipeline id
-    GetBrowsingContext(PipelineId, IpcSender<Option<BrowsingContextId>>),
-    /// Request that the constellation send the current pipeline id for the provided
-    /// browsing context id, over a provided channel.
-    GetPipeline(BrowsingContextId, IpcSender<Option<PipelineId>>),
     /// Request that the constellation send the current focused top-level browsing context id,
     /// over a provided channel.
     GetFocusTopLevelBrowsingContext(IpcSender<Option<WebViewId>>),