Fix Servo taking a long time to start on MacOS after a recompile (#30726)

* update init as we initialize media in the background now

With [#405](https://github.com/servo/media/pull/405) changes in
servo/media we move initialization of the media engine to a
background thread. This PR updates the init function in libservo
to adapt that behaviour.

Co-authored-by: Martin Robinson <mrobinson@igalia.com>

* review fix: simplify code

* Update media

---------

Co-authored-by: Martin Robinson <mrobinson@igalia.com>

1 files changed, 17 insertions, 16 deletions

diff --git a/components/servo/lib.rs b/components/servo/lib.rs
index 265fb63766a..b5a8eacc30d 100644
--- a/components/servo/lib.rs
+++ b/components/servo/lib.rs
@@ -112,24 +112,25 @@ mod media_platform {
 
     #[cfg(any(windows, target_os = "macos"))]
     pub fn init() {
-        let mut plugin_dir = std::env::current_exe().unwrap();
-        plugin_dir.pop();
+        ServoMedia::init_with_backend(|| {
+            let mut plugin_dir = std::env::current_exe().unwrap();
+            plugin_dir.pop();
 
-        if cfg!(target_os = "macos") {
-            plugin_dir.push("lib");
-        }
+            if cfg!(target_os = "macos") {
+                plugin_dir.push("lib");
+            }
 
-        let backend = match GStreamerBackend::init_with_plugins(
-            plugin_dir,
-            &gstreamer_plugins::GSTREAMER_PLUGINS,
-        ) {
-            Ok(b) => b,
-            Err(e) => {
-                eprintln!("Error initializing GStreamer: {:?}", e);
-                std::process::exit(1);
-            },
-        };
-        ServoMedia::init_with_backend(backend);
+            match GStreamerBackend::init_with_plugins(
+                plugin_dir,
+                &gstreamer_plugins::GSTREAMER_PLUGINS,
+            ) {
+                Ok(b) => b,
+                Err(e) => {
+                    eprintln!("Error initializing GStreamer: {:?}", e);
+                    std::process::exit(1);
+                },
+            }
+        });
     }
 
     #[cfg(not(any(windows, target_os = "macos")))]