compositor: Unify the cross process and in-process API (#36443)

Because there used to be two traits exposing messages to the compositor,
there were two kinds of messages that could be sent:

1. In-process messages from the `Constellation`
2. Cross-process messages from other parts of Servo

Now these two types of messages can be unified into one type. With that
done the compositor can simply keep a single `IpcReceiver` for all
messages, instead of having to set up a route for the cross-process
messsages. This decreases overhead of cross proceses messages a bit, but
more importantly solves an issue where Servo would rely on the
compositor's cross-process message route after the `Constellation` had
called `ROUTER.shutdown()`.

This is part of #36442.

Testing: This is covered by existing WPT tests.
Signed-off-by: Martin Robinson <mrobinson@igalia.com>

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

1 files changed, 15 insertions, 1 deletions

diff --git a/components/compositing/tracing.rs b/components/compositing/tracing.rs
index 907c931aebe..3b43fbbb445 100644
--- a/components/compositing/tracing.rs
+++ b/components/compositing/tracing.rs
@@ -42,7 +42,21 @@ mod from_constellation {
                 Self::LoadComplete(..) => target!("LoadComplete"),
                 Self::WebDriverMouseButtonEvent(..) => target!("WebDriverMouseButtonEvent"),
                 Self::WebDriverMouseMoveEvent(..) => target!("WebDriverMouseMoveEvent"),
-                Self::CrossProcess(_) => target!("CrossProcess"),
+                Self::SendInitialTransaction(..) => target!("SendInitialTransaction"),
+                Self::SendScrollNode(..) => target!("SendScrollNode"),
+                Self::SendDisplayList { .. } => todo!("SendDisplayList"),
+                Self::HitTest(..) => target!("HitTest"),
+                Self::GenerateImageKey(..) => target!("GenerateImageKey"),
+                Self::AddImage(..) => target!("AddImage"),
+                Self::UpdateImages(..) => target!("UpdateImages"),
+                Self::GenerateFontKeys(..) => target!("GenerateFontKeys"),
+                Self::AddFont(..) => target!("AddFont"),
+                Self::AddSystemFont(..) => target!("AddSystemFont"),
+                Self::AddFontInstance(..) => target!("AddFontInstance"),
+                Self::RemoveFonts(..) => target!("RemoveFonts"),
+                Self::GetClientWindowRect(..) => target!("GetClientWindowRect"),
+                Self::GetScreenSize(..) => target!("GetScreenSize"),
+                Self::GetAvailableScreenSize(..) => target!("GetAvailableScreenSize"),
             }
         }
     }